Specifications :

Power supply: internal 18650 Panasonic Or Sony 3000mah Safe Battery

Power consumption: 0.015 A - 0.03 A

Amplitude of the output: max. 7 - 8V

Maximum output current: 0.006 - 0.01A

this zapper have 3 circuit board , first is charger board ,you plug it USB you can through the window see the Red LED light up is charge battery , Blue is FULL Charge , Automatic stop ,

                                                     second board is 18650 input 3.0 - 4.2V raise up to +9V regulator Board , this range 3.0-4.2V input output +9V stable

                                                     Third board is zapper frequency generator 30khz , input +9V stable output 30khz not any big change ,

size : 70mm X 100mm X 36mm

weight : 135g

ship package include :

Hulda Clark Zapper with 18650 battery internal X 1

2x Copper Tube with cable

USB Charge cable X 1