Shanghai Berry Electronic Tech Co., Ltd.

Feature   Convenience Compact appearance, more convenient to carry.A button to wake up,  even the elderly can also be used simply.Two 1.5V AAA batteries can  be used continuously for more than 15 hours, more environmental  protection and saving.   Resting Heart Rate Heart beats per minute while at rest tells a lot about your internal  health and fitness levels. It is a strong indicator of your risk for  heart problems. Blood Oxygen Level Your body requires a very precise balance of oxygen in the blood.  For your body to perform optimally, blood oxygen levels should  be above 95%.   Specification   Operation system / SpO2 Detection scope: 35%-100% Accuracy: ±2% 80%-100% ±3% 70%-79% Pulse Rate Rage：25-250BPM Accuracy：±2BPM Resolution:1BPM Bluetooth / Battery Type Two 1.5V AAA alkaline batteries Service life Over 10000 times Display OLED Working voltage D.C.2.2 V~D.C.3.4V Operation   environment Temperature: 5℃ - 40℃ Relative humidity: 15% - 80% Atmospheric pressure: 86Kpa - 106Kpa Size 58 (H) × 34 (W) × 30(D)mm Weight 50g Include batteries Delivery time Mass production: about 15 days (2000pieces) OEM: about 25 days