Keep your pet safe. The Big Dog remote training system is specially designed for dogs weighing 40 lbs. or more and stubborn, hard-to-train dogs. It offers the widest range of stimulation levels available (10), which can be easily set from the hand-held transmitter. It also features a tone-only option, which is useful for correction without stimulation, once the dog is trained. The waterproof receiver collar can receive the correction signal up to 100 yards. Kit features10 levels of stimulation plus tone-only button100 yard rangeWaterproof ReceiverWater resistant remote transmitterAdjustable nylon collarOperations manualsTwo 3-volt batteries.Item requires two 9-volt batteries that are not included. This item ships free everyday!Transmitter Specifications:Height: 6″”Width: 1.5″”Depth: 1″”Weight: 3.5 oz.Frequency: 303.825 MHzCorrection dial on faceRed light on facePop off battery cover and belt clip on backReceiver Collar Specifications:Height: 1″”Width: 2.5″”Depth: 1.25″”Weight: 3.6 oz.Antenna running through strapLight on sidePower push buttonRed Light serves as low battery indicatorBattery life of up to 30 daysGeneral Information:Correction levels: 250 volts – 7000 voltsBefore 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 apartTemporary safety shut off occurs when a button has been held down for 5 seconds or longer (will reset when button is released)Light wi