Smartwatch with music storage / playback: control the music playback through the bluetooth watch (use the charging cable and connect it to your computer to transfer the songs) the sound quality is clear. Easily download up to 30 songs to your watch and connect to headphones equipped with bluetooth technology so you can call for free.Bluetooth call & message notifications: feifuns smartwatch with built-in speaker, microphone, after connecting smartwatch to cellphone, you can make / receive calls. If there are SMS or other messages (Instagram, Facebook, Twitter, WhatsApp, etc.) in your phone, the watch will vibrate and ring and remind you to read these messages on your watch.10 sport modes and IP67 waterproof fitness watch: IP67 waterproof standard, which makes it a star and the best choice for fitness tracker. There are several sport modes to choose from that provide more accurate data. The app records your phone's GPS trajectory after each training data and trajectory. The app shows the heart rate and the intensity of the body in real time, stimulating your training potential and increasing your interest in training.Health Tracking & Sleep Monitoring: With the latest HR sensor for accurate and effective heart rate monitoring, blood pressure measurement, blood Qoxygen measurement. This watch automatically detects your sleep at night and analyzes your sleep quality with deep sleep, light sleep and waking time. The silent vibrating alarms can wake you up without disturbing others.Wide compatibility: feifuns smartwatch is suitable for most Android and iOS smartphones, download it and enter it into the "H Band" app (you need to download the software by using the QR code on the Scan the manual or download it from the app market). After the smartwatch has been successfully connected to the smartphone via the app. The display language of the watch is automatically changed to German.