Just the remote. Used hardly before dog lost the collar.  Hope it can help someone.

The Remote Rechargeable Shock PET Trainer is a versatile and effective tool for training dogs of all sizes and breeds. With adjustable shock levels and a range of over 3000 feet, this waterproof collar provides a variety of control methods including beep, vibration, tone, light, and static/shock. The remote control unit features an internal antenna system and a low battery indicator for added convenience. This package offers the option to purchase up to 3 collars for multiple dogs.