1. Power supply: lithium battery 2. Pulse range: 40-180 beats / minute 3. Measuring range: 0-40kPa (0-300mmHg) 4. Battery capacity: 2200mAh 5. It can be continuously measured 150 times once filled, and automatically shut down in 3 minutes, which is longer and safer to use. 6. Display: 5.2-inch LED LCD screen 7. Host size: 172x98x58mm 8. Net weight of single product: 0.405kg