Vibeat Mini Pulse Oximeter, Small Size,for Motion

✨About Size - Suitable for 3-10 year. ✨Safe Material - Comfortable to wear. ✨Beep Reminder- Adjustable via the app. ✨Trend Data - Save data for easy viewing. ✨Free App and PC Software - Print reports. ------------------------------------------------------ Model: K-O2 Weight: 0.53 oz / 15g Device dimensions: 1.5'' x 1.2'' x 1.5'' Perimeter: 1.7'' - 1.9''/ 42-49mm Measure interval: 1 second APP interval: 4 seconds Mmory: 4 sessions, up to 10 hours for each Audio reminder source: When low Degree of dust & water resistance: IP24 Battery life: Rechargeable, 3.7 Vdc; 14-16 hours for typical use Wireless: Bluetooth 4.0 BLE Compatible computer system: Windows 7/8/10; macOS 10.15.3 or above