For more information: http://amzn.com/B0784G6RXT/?tag=allabolattwo-20 [2017 UPGRADED] PetSion Rechargeable Dog Training Collar with Remote,Water Resistant Electronic Shock Collars for Puppy,Small,Medium and Large Dogs. Collar Size:Suitable for all dogs, whether it’s small or large. TPU Collar Size from 5.5 inches to 26.4 inches . Battery Type:Rechargeable Lithium Batteries for Collar Receiver and Remote Transmitter. Tone/Vibration Options:Both Vibration and Shock have 16 Levels , while the Beep only has 1. FEATURES Launch different functions directly without selecting modes One remote could train up to THREE dogs at the same time Waterproof Collar Receiver Beep(1 level)/Vibration(16 levels)/Shock Mode(16 levels) Charging both at same time Package Contents 1 x Remote Transmitter. 1 x Collar Receiver. 1 x Adjustable TPU Belt. 1 x USB Charging Cable. 1 x Charger. 1 x hand strap 2 x Set of Contact Points This PetSion Training Collar: Built-in high capacity lithium rechargeable batteries (500 mAh for transmitter and 500 mAh for receiver). 100% MANUFACTURER GUARANTEE. Please feel free to purchase.