S2 1.08 inch TFT Color Screen Smart Watch, Silicone Strap ,IP67 Waterproof, Support Call Reminder Heart Rate MonitoringSleep MonitoringBlood Oxygen MonitoringBlood Pressure Monitoring Parameter: 1. Bluetooth: 5.0 2. Battery capacity: 95mAh 3. Waterproof rating: IP67 4. Battery type: polymer lithium battery 5. Equipment requirements: Android 4.4 and above, and support Bluetooth 4.0 IOS 8.0 and above, iPhone 4S and above iPhone Features: 1. 1.08 inch full sliding screen is a screen that can slide up and down. 2. IP67 deep waterproof, it is a bracelet that can be worn for swimming. 3. Super sound quality, HIFI sound quality, heavy bass effect. 4. The watch case is made of aviation aluminum alloy. 5. The strap adopts the 18MM standard, users can freely change according to their personality. 6. When taking out the headset to make a call, a double-button safety switch is designed, and the one-sided button cannot be opened. 7. A 400mAh charging compartment is standard configuration, allowing users to have a worry-free battery life, and it only takes 30 minutes to fully charge. 8. Support languages (Chinese, English, German, French, Korean, Japanese, Spanish, Italian, Arabic, Vietnamese)