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Smart Watch Wireless Smartwatchheart Rate Steps Tracking Sleep Monitoring Features: 1. 15 days battery life: A fully-optimized battery management system provides up to 15 days of battery life for the watch. Get rid of the anxiety brought on by constant charging, and keep the energy flowing. 2. Personalized watch faces: wear your beauty on your wrist. Choose from a broad range of watch face themes so that you're always in style. 3. Customize watch face: Customize the watch face with images of your choice, or even your own personal picture. 4. 24h health monitoring: the watch can maintain 24-hour heart rate monitoring. With proprietary ppg biological optical sensor, the watch delivers accurate heart rate measurements. 5. 13 mainstream exercise modes: it supports 13 mainstream exercise modes, which accurately track your sports activities. There are also multiple professional sensors that record physical data in full, and perform scientific analysis on them to enhance your exercise capacity. 6. Smart notifications: the watch has abundant practical applications and reminding functions, which facilitate your daily work and life. Description: This smart watch can be used for health detection, sleep tracking, message reminding, music control and so on. Specifications: Model: Ares Main body size: 41 * 4 6 * 11mm Strap length: 120 mm (long), 75 mm (short) Strap width: 20 mm Display: 1.3inch Color Touch Screen Resolution: 240 * 240 px Sensors: Heart-rate sensor, Proximity sensor, Accelerometer Wireless version: 5.1 Battery: 170 mAh Charging time: 1.5 hours Battery life: 15 days (Power-saving Scenario); 7 days (Typical Usage Scenario) Water resistant: 30 Meters Compatability: for Android 4.4 or iOS 9.0 and above APP language: Simplified Chinese, Traditional Chinese, English, Russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Portuguese, Spanish, Arabic, Korean Message push language: Simplified Chinese, Traditional Chinese, English, Korean, Japanese, German, Spanish, French, Italian, Portuguese, Arabic, Polish, Russian, Dutch, Turkish, Indonesian, Czech Package Included: 1 set * Smart Watch (built in lithium battery) Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.