Note: The measured data is for reference only and cannot be compared to medical devices. Specifications: Wrist strap size: 20mm* 200mm Body size: 43.25mmX36.25mmX9.4mm Product weight: 151g Cover: glass Body Material: Metal + plastic Strap Material: Silicone Bluetooth: BLE 5.0 Screen size: 1.4inch Resolution: 240*240 Battery capacity: 170mAH Charging method: Clip charging APP: Wearfit 2.0 Compatibility: I0S8.4 or above / Android 4.4 or higher Adaptation method: can be used independently or mobile APP Use Language: Support multi-language Function Description: Heart rate monitor Blood oxygen monitor Blood pressure monitoring Sleep monitoring Body thermometer More functions: Find my mobile phone, message reminder, music control Others: Sedentary reminder, alarm reminder, do not disturb mode, match language automatically. Sports modes: Running, climbing, cycling, football, basketball, walking, badminton, pingpong, swimning.