KLTECH KINGLAKE Remote Dog Training Collar Shock Vibra 2 Dogs Rechargeable Provides Safe Remote Control Receiver rechargeable, lightweight and compact, will not give the dog discomfort Maximum for two puppies at the same time, 300M effective remote distance 100 - levels of vibration and 100 - levels of Electrostatic. Levels can be altered by pressing Up& Down button, easy control The strong static impulse can penetrate in pet's hair and fabric less than 6mm thick Package Includes: 1x Remote controller , 2x Training collars; 1x Charger ; 2x Test light & replacement probes; 1x User Guide