PetSafe Deluxe UltraLight Receiver Collar - This waterproof receiver has 4 levels of correction to match the sensitivity of your pet plus tone only mode for training. It includes an adjustable nylon collar, battery, short Contact Points and Operating Guide. Light collar weighs only 2.5 ounces For dogs 8 pounds and up Uses RFA-67 battery (included) Compatible with PetSafe in-ground fences except UltraSmart Rechargeable In-Ground Fence (PIG00-13619) and YardMax Rechargeable In-Ground Fence (PIG00-11115) Also compatible with the Indoor Pet Barrier Transmitter (PIRF-100) to protect your pet indoors