For pets under 40 pounds 10 levels of stimulation plus tone-only button 100 yard range Waterproof Receiver, water resistant Transmitter Receiver uses two (2) 3-volt CR2032 batteries; Transmitter uses a 9-volt alkaline battery (both included) Manual included Transmitter Specs: Height: 6" Width: 1.5" Depth: 1" Weight: 3.5 oz. Frequency: 303.825 MHz Correction dial on face Red light on face Pop off battery cover and belt clip on back Receiver Collar Specs: Height: 1" Width: 2" Depth: .75" Weight: 2.1 oz. Antenna running through strap Light on side Power push button Red Light serves as low battery indicator Battery life of up to 30 days General Info: Correction levels: 400 volts - 6000 volts Before first use, you must program the Receiver Collar to the Transmitter by turning the Receiver Collar on, setting the Transmitter dial to level 1, and pressing the two buttons on the Transmitter at the same time while holding the Receiver Collar and Transmitter 1-5 feet apart Temporary safety shut off occurs when a button has been held down for 5