Fine degrees: blood pressure error: + 3mmHg (+ 0.4 Kpa)

Heart rate error: temperature: 5-40 centigrade;

Use environment: Humidity: 5% , < 85%

Display mode: large-screen LCD

Electricity pool: DC3.0 V, second quarter AAA (7) alkaline batteries

Reactive power consumption: tiny

Battery life: about 2 months (everyday use three minutes)

Heavy quantity: about 130g

Clew way: hum, hints