Product Description: ID116 Smart Watch - To activate the device, press and hold the function button for more than three seconds after it has been turned off. In the Bluetooth pairing interface of the watch, simultaneously press and hold the two-second wrist switch to turn off your phone. Briefly pressing this button will exit the shutdown menu. This feature allows you to reset the device, erasing all stored data, such as step counts. Under power-on conditions, brief presses of the function key will illuminate the screen. The default clock display can be switched between various pages by briefly pressing the function key, or it will automatically revert to the default five-second screen after inactivity. The heart rate monitor interface can be accessed by briefly pressing the function key and will automatically time out after 60 seconds. This feature requires bracelet hardware support for both heart rate and blood pressure monitoring. The watch features a clock display, step count tracking, distance measurement, calorie burn calculation, and multi-mode functionality, including running, jumping rope, sit-ups, sleep tracking, and information displays. The accompanying app offers various settings and functions: 1. Personal Information: Users can input their age, height, and weight within the app. 2. Application Push Notifications: Receive notifications for incoming calls, SMS messages, other reminders (e.g., from WeChat, QQ, Facebook, Twitter, WhatsApp), alarm settings, device location tracking, remote photography, sedentary reminders, screen brightness adjustment, do-not-disturb mode, device reset, and device removal. Key specifications include: Equipment Type: Smart Wristband Vibration Motor Support: Yes Operating Temperature Range: -10C to 50C System Requirements: iOS 9.0 or later/Android 5.0 or later Battery Type: Lithium Polymer Synchronization Method: Bluetooth 4.0 Sensor: Low-Power Acceleration Sensor The device comes with a low-power acceleration sensor and is compatible with various devices via Bluetooth 4.0.