1. Bluetooth: 4.0 2. Support mobile version: iOS 8.0 or more, Android 4.4 or more 3. Adaptation: It can be used independently or simultaneously with mobile app. 4. Main functions: pacing, heart rate, blood pressure, blood oxygen, distance, calories, sleep monitoring, call reminder (call number/name), information reminder, alarm clock reminder, female physiological cycle 5. Batteries: polymer 155 mA
