1. Charging method: 5V/1A mobile phone power adapter2. Charging time: about 1.5h3. Working time: about 13 hours4. Standby time: about 8 months, automatic shutdown when voltage is lower than 2.9V5. Working current: 90mA6. Power: 400mW7. Working temperature: -10 degrees to 60 degrees8. LCD interface display, data recording, battery power display9. Maximum output deviation from the best straight line applicable to the measured output within the pressure range at 25 degrees10. Suitable for testing fan and blower pressure, filter resistance, wind speed, furnace pressure, orifice pressure difference, bubble water level, hydraulic system pressure, etc. Also suitable for controlling gas proportions and automatic valves during combustion, monitoring blood pressure and respiratory pressure.Specification: Package Weight One Package Weight 0.20kgs / 0.45lb One Package Size 22cm * 18cm * 5cm / 8.66inch * 7.09inch * 1.97inch Qty per Carton 60 Carton Weight 13.00kgs / 28.66lb Carton Size 46cm * 56cm * 52cm / 18.11inch * 22.05inch * 20.47inch Loading Container 20GP: 199 cartons * 60 pcs = 11940 pcs 40HQ: 462 cartons * 60 pcs = 27720 pcs