diff --git a/mirroringBooth/StoreTests/CameraPreviewStoreTests.swift b/mirroringBooth/StoreTests/CameraPreviewStoreTests.swift
index c0b06df6..f60a60d8 100644
--- a/mirroringBooth/StoreTests/CameraPreviewStoreTests.swift
+++ b/mirroringBooth/StoreTests/CameraPreviewStoreTests.swift
@@ -47,7 +47,8 @@ struct CameraPreviewStoreTests {
         let store = CameraPreviewStore(
             browser: Browser(),
             manager: manager,
-            deviceName: deviceName
+            deviceName: deviceName,
+            watchConnectionManager: nil
         )
         return (store, manager)
     }
@@ -154,9 +155,9 @@ struct CameraPreviewStoreTests {
     @Test func 미러링_연결이_끊기면_상태가_반영됨() {
         let (store, _) = makeSUT()
 
-        store.send(.isMirroringDisconnected)
+        store.send(.isPrimaryDeviceDisconnected)
 
-        #expect(store.state.isMirroringDisconnected == true)
+        #expect(store.state.isPrimaryDeviceDisconnected == true)
     }
 
     // MARK: - reduce 테스트 (Browser 관련 Intent 대체)
diff --git a/mirroringBooth/WatchStoreTests/WatchStoreTests.swift b/mirroringBooth/WatchStoreTests/WatchStoreTests.swift
index 8912beac..e02f2745 100644
--- a/mirroringBooth/WatchStoreTests/WatchStoreTests.swift
+++ b/mirroringBooth/WatchStoreTests/WatchStoreTests.swift
@@ -101,7 +101,7 @@ struct WatchStoreTests {
     @Test func 대기_화면이_나타나면_대기_상태가_켜짐() {
         let store = makeSUT()
 
-        store.send(.setIsWaiting(true))
+        store.send(.isWaiting(true))
 
         #expect(store.state.isWaiting == true)
     }
diff --git a/mirroringBooth/mirroringBooth/App/RootStore.swift b/mirroringBooth/mirroringBooth/App/RootStore.swift
index a10170ec..df004195 100644
--- a/mirroringBooth/mirroringBooth/App/RootStore.swift
+++ b/mirroringBooth/mirroringBooth/App/RootStore.swift
@@ -70,7 +70,7 @@ extension RootStore {
             for await stream in advertiser.rootStream {
                 switch stream {
                 case .onHeartbeatTimeout:
-                    await MainActor.run {
+                    await MainActor.run { [weak self] in
                         self?.send(.showTimeoutAlert(true))
                     }
                 }
diff --git a/mirroringBooth/mirroringBooth/App/RootView.swift b/mirroringBooth/mirroringBooth/App/RootView.swift
index 169ab27d..3c21c9dd 100644
--- a/mirroringBooth/mirroringBooth/App/RootView.swift
+++ b/mirroringBooth/mirroringBooth/App/RootView.swift
@@ -23,8 +23,8 @@ struct RootView: View {
                     case .advertising:
                         AdvertisingView()
 
-                    case .connectionList(let list, let browser):
-                        ConnectionCheckView(list, browser: browser)
+                    case .connectionList(let list, let browser, let watchConnectionManager):
+                        ConnectionCheckView(list, browser: browser, watchConnectionManager: watchConnectionManager)
 
                     case .completion:
                         StreamingCompletionView()
diff --git a/mirroringBooth/mirroringBooth/Core/Router.swift b/mirroringBooth/mirroringBooth/Core/Router.swift
index 1809398b..8559c5cd 100644
--- a/mirroringBooth/mirroringBooth/Core/Router.swift
+++ b/mirroringBooth/mirroringBooth/Core/Router.swift
@@ -27,7 +27,7 @@ final class Router {
 enum CameraRoute: Hashable {
     case browsing
     case advertising
-    case connectionList(ConnectionList, Browser)
+    case connectionList(ConnectionList, Browser, WatchConnectionManager)
     case completion
 }
 
diff --git a/mirroringBooth/mirroringBooth/Device/Camera/Browser/Browser.swift b/mirroringBooth/mirroringBooth/Device/Camera/Browser/Browser.swift
index 7c6b3e69..71ed3e3f 100644
--- a/mirroringBooth/mirroringBooth/Device/Camera/Browser/Browser.swift
+++ b/mirroringBooth/mirroringBooth/Device/Camera/Browser/Browser.swift
@@ -45,6 +45,9 @@ final class Browser: NSObject, BrowserCommandDelegate {
     /// 타이머 모드 선택 명령 수신 콜백
     var onSelectedTimerModeCommand: (() -> Void)?
 
+    /// 타이머 모드가 선택되었는지 여부 (워치 disconnect 무시용)
+    var isTimerModeSelected: Bool = false
+
     // MARK: - Stream Manager
 
     let streamManager = BrowserStreamManager()
diff --git a/mirroringBooth/mirroringBooth/Device/Camera/Browser/BrowsingView.swift b/mirroringBooth/mirroringBooth/Device/Camera/Browser/BrowsingView.swift
index 9462d54d..90822518 100644
--- a/mirroringBooth/mirroringBooth/Device/Camera/Browser/BrowsingView.swift
+++ b/mirroringBooth/mirroringBooth/Device/Camera/Browser/BrowsingView.swift
@@ -93,9 +93,10 @@ struct BrowsingView: View {
                                     ConnectionList(
                                         cameraName: store.browser.myDeviceName,
                                         mirroringName: mirroringDevice.id,
-                                        remoteName: store.state.remoteDevice?.id ?? nil
+                                        remoteName: store.state.remoteDevice?.id
                                     ),
-                                    store.browser
+                                    store.browser,
+                                    store.watchConnectionManager
                                 )
                             )
                         }
diff --git a/mirroringBooth/mirroringBooth/Device/Camera/Browser/Manager/BrowserCommandManager.swift b/mirroringBooth/mirroringBooth/Device/Camera/Browser/Manager/BrowserCommandManager.swift
index 30ae52f7..e2cd8e49 100644
--- a/mirroringBooth/mirroringBooth/Device/Camera/Browser/Manager/BrowserCommandManager.swift
+++ b/mirroringBooth/mirroringBooth/Device/Camera/Browser/Manager/BrowserCommandManager.swift
@@ -15,6 +15,7 @@ protocol BrowserCommandDelegate: AnyObject {
     var onSelectedTimerModeCommand: (() -> Void)? { get }
     var mirroringHeartBeater: HeartBeater { get }
     var remoteHeartBeater: HeartBeater? { get }
+    var isTimerModeSelected: Bool { get set }
 }
 
 /// 명령 수신 및 실행을 담당하는 매니저
@@ -42,11 +43,14 @@ final class BrowserCommandManager {
                 self?.delegate?.sendRemoteCommand(.navigateToRemoteComplete)
             }
         case .setRemoteMode:
+            delegate?.isTimerModeSelected = false
             DispatchQueue.main.async { [weak self] in
                 self?.delegate?.onRemoteModeCommand?()
                 self?.delegate?.sendRemoteCommand(.navigateToRemoteCapture)
             }
         case .selectedTimerMode:
+            // 워치 disconnect 무시를 위해 동기적으로 먼저 플래그 설정
+            delegate?.isTimerModeSelected = true
             DispatchQueue.main.async { [weak self] in
                 self?.delegate?.onSelectedTimerModeCommand?()
                 self?.delegate?.sendRemoteCommand(.navigateToHome)
diff --git a/mirroringBooth/mirroringBooth/Device/Camera/Browser/WatchConnectionManager+iOS.swift b/mirroringBooth/mirroringBooth/Device/Camera/Browser/WatchConnectionManager+iOS.swift
index d4b2b45e..9ff2c4a7 100644
--- a/mirroringBooth/mirroringBooth/Device/Camera/Browser/WatchConnectionManager+iOS.swift
+++ b/mirroringBooth/mirroringBooth/Device/Camera/Browser/WatchConnectionManager+iOS.swift
@@ -40,6 +40,7 @@ final class WatchConnectionManager: NSObject {
     var onReachableChanged: ((Bool) -> Void)?
     var onReceiveCaptureRequest: (() -> Void)?
     var onReceiveConnectionAck: (() -> Void)?
+    var onWatchDisconnected: (() -> Void)?
 
     override init() {
         if WCSession.isSupported() {
@@ -239,6 +240,11 @@ extension WatchConnectionManager: WCSessionDelegate {
                     self.prepareWatchToCapture()
                 }
             }
+        } else if actionValue == ActionValue.disconnect.rawValue {
+            self.logger.info("워치에서 연결 해제 요청 수신됨.")
+            Task { @MainActor in
+                self.onWatchDisconnected?()
+            }
         }
     }
 
diff --git a/mirroringBooth/mirroringBooth/Device/Camera/ConnectionCheck/ConnectionCheckStore.swift b/mirroringBooth/mirroringBooth/Device/Camera/ConnectionCheck/ConnectionCheckStore.swift
index b886c78b..b33459a5 100644
--- a/mirroringBooth/mirroringBooth/Device/Camera/ConnectionCheck/ConnectionCheckStore.swift
+++ b/mirroringBooth/mirroringBooth/Device/Camera/ConnectionCheck/ConnectionCheckStore.swift
@@ -36,6 +36,7 @@ final class ConnectionCheckStore: StoreProtocol {
     private(set) var state: State = .init()
 
     let browser: Browser
+    let watchConnectionManager: WatchConnectionManager
     let cameraDevice: String
     let mirroringDevice: String
 
@@ -43,11 +44,13 @@ final class ConnectionCheckStore: StoreProtocol {
 
     init(
         _ list: ConnectionList,
-        _ browser: Browser
+        _ browser: Browser,
+        _ watchConnectionManager: WatchConnectionManager
     ) {
         self.cameraDevice = list.cameraName
         self.mirroringDevice = list.mirroringName
         self.browser = browser
+        self.watchConnectionManager = watchConnectionManager
 
         Task { @MainActor in
             reduce(.setRemoteDevice(list.remoteName))
diff --git a/mirroringBooth/mirroringBooth/Device/Camera/ConnectionCheck/ConnectionCheckView.swift b/mirroringBooth/mirroringBooth/Device/Camera/ConnectionCheck/ConnectionCheckView.swift
index 1ec83b31..a9c2839d 100644
--- a/mirroringBooth/mirroringBooth/Device/Camera/ConnectionCheck/ConnectionCheckView.swift
+++ b/mirroringBooth/mirroringBooth/Device/Camera/ConnectionCheck/ConnectionCheckView.swift
@@ -11,8 +11,8 @@ struct ConnectionCheckView: View {
     @Environment(Router.self) var router: Router
     @State private var store: ConnectionCheckStore
 
-    init(_ list: ConnectionList, browser: Browser) {
-        self.store = .init(list, browser)
+    init(_ list: ConnectionList, browser: Browser, watchConnectionManager: WatchConnectionManager) {
+        self.store = .init(list, browser, watchConnectionManager)
     }
 
     var body: some View {
@@ -86,6 +86,7 @@ struct ConnectionCheckView: View {
                     CameraPreview(
                         store.browser,
                         mirroringName: store.mirroringDevice,
+                        watchConnectionManager: store.watchConnectionManager,
                         onDismissByCaptureCompletion: {
                             store.send(.navigateToCompletion(true))
                         }
diff --git a/mirroringBooth/mirroringBooth/Device/Camera/Streaming/CameraPreview.swift b/mirroringBooth/mirroringBooth/Device/Camera/Streaming/CameraPreview.swift
index 649e680b..8b87d007 100644
--- a/mirroringBooth/mirroringBooth/Device/Camera/Streaming/CameraPreview.swift
+++ b/mirroringBooth/mirroringBooth/Device/Camera/Streaming/CameraPreview.swift
@@ -19,9 +19,15 @@ struct CameraPreview: View {
     init(
         _ browser: Browser,
         mirroringName: String,
+        watchConnectionManager: WatchConnectionManager?,
         onDismissByCaptureCompletion: (() -> Void)? = nil
     ) {
-        self.store = .init(browser: browser, manager: CameraManager(), deviceName: mirroringName)
+        self.store = .init(
+            browser: browser,
+            manager: CameraManager(),
+            deviceName: mirroringName,
+            watchConnectionManager: watchConnectionManager
+        )
         self.onDismissByCaptureCompletion = onDismissByCaptureCompletion
     }
 
@@ -93,7 +99,7 @@ struct CameraPreview: View {
         }
         .homeAlert(
             isPresented: Binding(
-                get: { store.state.isMirroringDisconnected },
+                get: { store.state.isPrimaryDeviceDisconnected },
                 set: { _ in }
             ),
             message: "기기 연결이 끊겼습니다.",
diff --git a/mirroringBooth/mirroringBooth/Device/Camera/Streaming/CameraPreviewStore.swift b/mirroringBooth/mirroringBooth/Device/Camera/Streaming/CameraPreviewStore.swift
index ed34ad64..244a70b8 100644
--- a/mirroringBooth/mirroringBooth/Device/Camera/Streaming/CameraPreviewStore.swift
+++ b/mirroringBooth/mirroringBooth/Device/Camera/Streaming/CameraPreviewStore.swift
@@ -21,14 +21,14 @@ final class CameraPreviewStore: StoreProtocol {
         var animationFlag: Bool = false
         var isTransferring: Bool = false
         var isCaptureCompleted: Bool = false
-        var isMirroringDisconnected: Bool = false
+        var isPrimaryDeviceDisconnected: Bool = false
     }
 
     enum Intent {
         case entry(withAngle: Int)
         case exit
         case updateAngle(rawValue: Int)
-        case isMirroringDisconnected
+        case isPrimaryDeviceDisconnected
         case browserEvent(CameraStreamEvents)
     }
 
@@ -41,12 +41,13 @@ final class CameraPreviewStore: StoreProtocol {
         case setIsTransferring(Bool)
         case captureCompleted
         case resetCaptureCompleted
-        case isMirroringDisconnected
+        case setIsPrimaryDeviceDisconnected
     }
 
     private(set) var state: State
     private let browser: Browser
     private let cameraManager: CameraManageable
+    private let watchConnectionManager: WatchConnectionManager?
     private var cancellables = Set<AnyCancellable>()
     private var heartbeatTask: Task<Void, Never>?
 
@@ -58,12 +59,15 @@ final class CameraPreviewStore: StoreProtocol {
         browser: Browser,
         manager: CameraManageable,
         deviceName: String,
+        watchConnectionManager: WatchConnectionManager?
     ) {
         self.browser = browser
         self.cameraManager = manager
+        self.watchConnectionManager = watchConnectionManager
         self.state = State(deviceName: deviceName)
 
         setupHeartbeatListener()
+        setupWatchConnectionListener()
     }
 
     deinit {
@@ -89,8 +93,8 @@ final class CameraPreviewStore: StoreProtocol {
         case .updateAngle(let rawValue):
             return [.updateAngle(rawValue)]
 
-        case .isMirroringDisconnected:
-            return [.isMirroringDisconnected]
+        case .isPrimaryDeviceDisconnected:
+            return [.setIsPrimaryDeviceDisconnected]
 
         case .browserEvent(let event):
             return handleBrowserEvent(event)
@@ -122,8 +126,8 @@ final class CameraPreviewStore: StoreProtocol {
         case .resetCaptureCompleted:
             state.isCaptureCompleted = false
 
-        case .isMirroringDisconnected:
-            state.isMirroringDisconnected = true
+        case .setIsPrimaryDeviceDisconnected:
+            state.isPrimaryDeviceDisconnected = true
         }
         self.state = state
     }
@@ -187,16 +191,32 @@ extension CameraPreviewStore {
                 await MainActor.run {
                     switch event {
                     case .heartbeatTimeout:
-                        self.send(.isMirroringDisconnected)
-                        self.browser.disconnect(useType: .remote)
+                        self.handleDisconnection()
                     case .remoteHeartbeatTimeout:
-                        self.browser.sendCommand(.switchSelectModeView)
+                        self.handleDisconnection()
                     }
                 }
             }
         }
     }
 
+    private func setupWatchConnectionListener() {
+        watchConnectionManager?.onWatchDisconnected = { [weak self] in
+            guard let self else { return }
+            Task { @MainActor in
+                // 타이머 모드가 선택되었으면 워치 disconnect 무시
+                guard !self.browser.isTimerModeSelected else { return }
+                self.handleDisconnection()
+            }
+        }
+    }
+
+    @MainActor
+    private func handleDisconnection() {
+        send(.isPrimaryDeviceDisconnected)
+        browser.disconnect()
+    }
+
     private func handleBrowserEvent(_ event: CameraStreamEvents) -> [Result] {
         switch event {
         case .sendPhoto:
diff --git a/mirroringBooth/mirroringBooth/Device/Remote/AppleWatch/WatchConnectionManger+watchOS.swift b/mirroringBooth/mirroringBooth/Device/Remote/AppleWatch/WatchConnectionManger+watchOS.swift
index cec04f06..da5bc2a0 100644
--- a/mirroringBooth/mirroringBooth/Device/Remote/AppleWatch/WatchConnectionManger+watchOS.swift
+++ b/mirroringBooth/mirroringBooth/Device/Remote/AppleWatch/WatchConnectionManger+watchOS.swift
@@ -158,6 +158,14 @@ final class WatchConnectionManager: NSObject {
         )
     }
 
+    /// 사용자가 X 버튼을 눌러 연결을 해제했음을 iPhone에 알립니다.
+    func sendDisconnectRequest() {
+        self.sendMessage(
+            action: .disconnect,
+            rejectedActionString: "연결 해제 요청을 보낼 수 없습니다."
+        )
+    }
+
     private nonisolated func handleAppStateUpdate(_ applicationContext: [String: Any]) {
         let appStateRawValue = applicationContext[MessageKey.appState.rawValue] as? String
         let appStateValue = appStateRawValue.flatMap { AppStateValue(rawValue: $0) }
diff --git a/mirroringBooth/mirroringBooth/Device/Remote/AppleWatch/WatchConnectionStore.swift b/mirroringBooth/mirroringBooth/Device/Remote/AppleWatch/WatchConnectionStore.swift
index 7a194c66..a3b1976b 100644
--- a/mirroringBooth/mirroringBooth/Device/Remote/AppleWatch/WatchConnectionStore.swift
+++ b/mirroringBooth/mirroringBooth/Device/Remote/AppleWatch/WatchConnectionStore.swift
@@ -78,6 +78,7 @@ final class WatchConnectionStore: StoreProtocol {
             self.connectionManager.start()
 
         case .disconnect:
+            self.connectionManager.sendDisconnectRequest()
             self.connectionManager.stop()
             return [.setConnectionState(.notConnected)]
 
diff --git a/mirroringBooth/mirroringBooth/Device/Remote/RemoteCaptureView.swift b/mirroringBooth/mirroringBooth/Device/Remote/RemoteCaptureView.swift
index 787f4d54..175376c9 100644
--- a/mirroringBooth/mirroringBooth/Device/Remote/RemoteCaptureView.swift
+++ b/mirroringBooth/mirroringBooth/Device/Remote/RemoteCaptureView.swift
@@ -28,5 +28,6 @@ struct RemoteCaptureView: View {
                 }
             }
         }
+        .navigationBarBackButtonHidden()
     }
 }