Using your Rose Gold Active Pro Call+ III Smart Watch is easy. First, pair it with your smartphone via Bluetooth. Make sure your phone's OS is iOS 8.2 or above, or Android 4.4 or above. Once paired, you can make BT calls and listen to BT music right from your watch. To track your fitness, select the appropriate sport mode. The heart - rate monitor will keep an eye on your heart rate during workouts, and the calorie calculation feature will show how many calories you've burned. You can also view your workout route on the track map. For time - based activities, use the stopwatch. The watch supports multiple languages, so you can set it to your preferred one. When it comes to maintenance, keep the watch clean with a soft, dry cloth. Avoid exposing it to extreme temperatures or moisture. If you have any issues, try restarting the watch and re - pairing it with your phone.