Description:  ALL DAY ACTIVITY TRACKING- Accurately record all-day activities like steps,distance,calories burned,active minutes. Connect with mobile's GPS,you can check your real-time route in the App. 5 training modes (running, walking, climbing, riding, sporting) available for you to better track your other activities. DYNAMIC HEART RATE AND AUTO SLEEP MONITOR:- Stevvex  fitness tracker monitors dynamic heart rate,uploading the real time data of heartbeats to phone app. Also support automatic sleep monitoring,it records deep sleep,light sleep,awake time and whole sleep time. All health data show in a chart,clearly acknowledge your physical fitness status of the whole day. The silent vibration alarm can wake you up without disturbing others. SMART WATCH, NEVER MISS CALL& MESSAGE- See Calls & Messages on Your Wrist: support call, calendar,SMS and SNS (Facebook, WhatsApp,WeChat,and Twitter) notifications. The tracker will vibrate when a call or message comes,you can see the caller ID and message displayed on screen. LONGER BATTERY LIFE & COMPATIBILITY-- Full charge requires only about 2 hours and the standby time can be 5-7 days. App supports smart phones with Bluetooth 4.0 or above(not for tablet). Support system: iPhone iOS 9.0 above,Android 5.1 above. 12-MONTH WARRANTY- For this fitness tracker we offer 12-Month Worry-Free product warranty. If you have any problem or suggestion please contact us, we will try our best to help you. Brand Name: STEVVEX Watch Model Number: ST1WT328462XVVB Mechanism: Yes SIM Card Available: No System: Android OS GPS: No Type: On Wrist Compatibility: All Compatible ROM: <128MB Function: Passometer Function: Fitness Tracker Function: Sleep Tracker Function: Message Reminder Function: Call Reminder Function: Remote Control Function: Push Message Function: 24 hour instruction Function: Chronograph Function: Alarm Clock Function: World Time Function: Week Function: Month Function: Heart Rate Tracker Function: Noctilucent Function: Calendar Rear Camera: None Language: English RAM: <128MB Waterproof Grade: Professional Waterproof Multiple Dials: Yes Battery Capacity: 180-220mAh Network Mode: None Style: Fashion Movement Type: Electronic Screen Shape: ROUND Resolution: 240*240 APP Download Available: Yes Case Material: Alloy CPU Manufacturer: Mediatek Display Size: 1.3inch Band Material: Silica Gel Application Age Group: Adult Battery Detachable: No Band Detachable: Yes function 1: smart watch men function 2: smart watch women function 3: fitness watch function 4: sport watch function 5: health watch function 6: heart rate monitor watch function 7: watch pedometer function 8: smart watch function 9: women watch function 10: men watch