Discreet, lightweight, power packed wireless fully adjustable jelly coated clamps. Micro Batteries included. Discreet, lightweight, power packed, wireless, fully adjustable Jelly coated clamps ABS (stimulators) PVC (coating) Batteries included (4 watch, 8 included) 3.5”/9 cm (length- bullet and clamp) 1”/3 cm (length – clamp)