Feature： 1.Easy operation:Pin holding operation,Sensor switch,No pedal. 2.Real-Time notice:LCD display, with dose tone. 3.Lithium battery Charging Safety:Inductive battery Charging. 4.Save cost:No Disposable pipe consume,need to change regular disposable needles only, no other consumables. 5.Compatible: the booster tube is compatible with two types of needles (Metric and British system）. 6.Melody: comfortable and sweet melody. Technical Parameters : 1. Temperature: 0-40℃ 2. Relative humidity :10-85% 3. Battery: 3.7V 4. Power : DC 5.0V Packing : 1.Main machine *1 2.Boosting pipes（NO.1 British system,NO.2 Metric system）*4 3.Power adapter(With One USB Cable)*1 4.O-ring *5 pieces

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