Technical Parameters: - Battery: 3.7V. - Power: DC 5.0V. Use environment: - Temperature: 0~40℃. - Relative humidity: 10-85%RH. - Atmospheric pressure: 70kPa~106kPa. Injection speed: Gears: Single anesthesia injection time: - High: 50-70 seconds. - Slow: 130-170 seconds. - BDL: 200-280 seconds. Pack contains: - 1 x Packing box. - 1 x Main machine. - 10 x Injection tubes (inch/metric). - 1 x Power adapter (with one USB cable). - 5 x O-ring. - 1 x User manual.