Measuring range: Pressure: SYS: 30-270 mmHg(4-36 kPa) DIA: 10-220 mmHg(1.3-293 kPa) Pulse 40-240/min . Static accuracy: Pressure: +3mmHg . Measuring resolution: 1mmHgPower: 1.5V AAA size batteries 4 (Alkaline batteries) . Operation temperature: 5~40°C . Operation Humidity: 15%-85%RH ( no condensation) . Storage temperature: -20~+55°C . Storage humidity: 10%~95%RH maximum . Dimensions: 129*101*72 mm . Weight: 281 gm (without batteries) .