Description:  HEART RATE & SLEEP MONITORING:Tracks real-time heart rate automatically & continuously and automatically tracks your sleep duration & consistency with comprehensive analysis of sleep quality data, helping you adjust yourself for a healthier lifestyle ALL-DAY ACTIVITY TRACKING:Accurately record all-day activities like steps, distance, calories burned, active minutes and sleep status MULTY-SPORT MODES& CONNECTED GPS: 14 exercise modes help you better understand specific activity data; Connect the GPS on your cellphone can show run stats like pace and distance and record a map of your workout route SEE CALLS & MESSAGES ON YOUR WATCH:: Receive call, calendar, SMS and SNS (Facebook, WhatsApp, LinkedIn, Instagram, and Twitter) notifications on display; never miss the messages that matter BUILT-IN USB PLUG: Easy to charge with any USB block and computer; no charging cable and dock needed; one single charge gives you up to 7 days of working time Brand Name: STEVVEX Watch Model Number: ST1WT321816EYS Mechanism: No SIM Card Available: No System: ios System: Android OS GPS: No Type: On Wrist Compatibility: All Compatible ROM: <128MB Function: Passometer Function: Fitness Tracker Function: Sleep Tracker Function: Heart Rate Tracker Function: Message Reminder Function: Call Reminder Rear Camera: None Language: English Language: Spanish Language: Russian Language: German Language: Korean Language: Japanese Language: Polish RAM: <128MB Waterproof Grade: Professional Waterproof Multiple Dials: Yes Battery Capacity: <120mAh Network Mode: None Style: SPORT Screen Shape: Square APP Download Available: Yes Case Material: Plastic Band Material: Silica Gel Application Age Group: Adult Battery Detachable: No Band Detachable: Yes Function 1: Fitness tracker Wristband Function 2: Heart Rate Activity Function 3: Screen Smart Electronics Bracelet watch Function 4: Screen Waterproof Compatible system: Android,ISO,Windows,PC People: Gift for Women, Man,Girl,Boy,Ladies