Item Type: Slimming MassagerMaterial: ABSSize: 3.90" x 2.91" x 0.94" / 9.9 x 7.4 x 2.4cmPowered by 2AA batteries(not included) 1. load 2 AAA batteries into controller2. connect the four pads to controller3. stick the four pads to skin， when you use only 2 pads， the 2 pads must be from different channels.4. press "on" to turn on the machine.5. press "on" again to start electro shock.6. press "on" more times to intensify the electro shock power / press "off" to weaken the electro shock power.7. press "S/P" to enter Speed Control， then press "on" to speed up / press "off" to slow down.8. press "S/P" again to back to Power Control9. press "MODE" to change electro shock mode10. Press "off" to turn off the machine