diff --git a/src/applewatch/index.ts b/src/applewatch/index.ts
new file mode 100644
index 0000000..53c48e1
--- /dev/null
+++ b/src/applewatch/index.ts
@@ -0,0 +1,17 @@
+import type { IWatchConnector } from '../core';
+
+export class AppleWatchConnector implements IWatchConnector {
+  async connect(): Promise<void> {
+    // TODO: implement Apple Watch-specific connection logic
+  }
+
+  async disconnect(): Promise<void> {
+    // TODO: implement Apple Watch-specific disconnection logic
+  }
+
+  isConnected(): boolean {
+    return false;
+  }
+}
+
+export default AppleWatchConnector;
diff --git a/src/core/index.ts b/src/core/index.ts
new file mode 100644
index 0000000..96db900
--- /dev/null
+++ b/src/core/index.ts
@@ -0,0 +1,17 @@
+export interface IWatchConnector {
+  connect(): Promise<void>;
+  disconnect(): Promise<void>;
+  isConnected(): boolean;
+}
+
+export interface IDataSync {
+  syncData(data: unknown): Promise<void>;
+  fetchData(): Promise<unknown>;
+}
+
+export interface IWatchEventHandlers {
+  onConnect?(): void;
+  onDisconnect?(): void;
+  onMessage?(data: unknown): void;
+  onError?(error: Error): void;
+}
diff --git a/src/garmin/index.ts b/src/garmin/index.ts
new file mode 100644
index 0000000..5150592
--- /dev/null
+++ b/src/garmin/index.ts
@@ -0,0 +1,17 @@
+import type { IWatchConnector } from '../core';
+
+export class GarminConnector implements IWatchConnector {
+  async connect(): Promise<void> {
+    // TODO: implement Garmin-specific connection logic
+  }
+
+  async disconnect(): Promise<void> {
+    // TODO: implement Garmin-specific disconnection logic
+  }
+
+  isConnected(): boolean {
+    return false;
+  }
+}
+
+export default GarminConnector;
diff --git a/src/huawei/index.ts b/src/huawei/index.ts
new file mode 100644
index 0000000..576edb4
--- /dev/null
+++ b/src/huawei/index.ts
@@ -0,0 +1,17 @@
+import type { IWatchConnector } from '../core';
+
+export class HuaweiConnector implements IWatchConnector {
+  async connect(): Promise<void> {
+    // TODO: implement Huawei-specific connection logic
+  }
+
+  async disconnect(): Promise<void> {
+    // TODO: implement Huawei-specific disconnection logic
+  }
+
+  isConnected(): boolean {
+    return false;
+  }
+}
+
+export default HuaweiConnector;
diff --git a/src/index.tsx b/src/index.ts
similarity index 90%
rename from src/index.tsx
rename to src/index.ts
index 14d1dcf..ad273f8 100644
--- a/src/index.tsx
+++ b/src/index.ts
@@ -2,6 +2,13 @@ import { AppRegistry } from 'react-native';
 import { NativeModules, Platform } from 'react-native';
 import { watchEvents } from './subscriptions';
 import { sendMessage } from './messages';
+// Re-export shared interfaces and device connectors
+export * from './core';
+export * from './garmin';
+export * from './miband';
+export * from './huawei';
+export * from './wearos';
+export * from './applewatch';
 import type {
   ReplyCallback,
   ErrorCallback,
diff --git a/src/miband/index.ts b/src/miband/index.ts
new file mode 100644
index 0000000..e80451f
--- /dev/null
+++ b/src/miband/index.ts
@@ -0,0 +1,17 @@
+import type { IWatchConnector } from '../core';
+
+export class MiBandConnector implements IWatchConnector {
+  async connect(): Promise<void> {
+    // TODO: implement Mi Band-specific connection logic
+  }
+
+  async disconnect(): Promise<void> {
+    // TODO: implement Mi Band-specific disconnection logic
+  }
+
+  isConnected(): boolean {
+    return false;
+  }
+}
+
+export default MiBandConnector;
diff --git a/src/wearos/index.ts b/src/wearos/index.ts
new file mode 100644
index 0000000..ba0068f
--- /dev/null
+++ b/src/wearos/index.ts
@@ -0,0 +1,17 @@
+import type { IWatchConnector } from '../core';
+
+export class WearOSConnector implements IWatchConnector {
+  async connect(): Promise<void> {
+    // TODO: implement Wear OS-specific connection logic
+  }
+
+  async disconnect(): Promise<void> {
+    // TODO: implement Wear OS-specific disconnection logic
+  }
+
+  isConnected(): boolean {
+    return false;
+  }
+}
+
+export default WearOSConnector;