The Educator 1-Dog Mini Remote Dog Trainer ET-300-2T-CP is a medium range trainer that is especially made for smaller hands or in situation where discreetness is important. Utilizing "Lock and Set" technology, Li-Polymer rechargeable batteries, waterproof floating remote and waterproof receivers, this remote provides a very clean stimulation without the normal head jerking motion often found in other training collars. With an extra transmitter on the same frequency, you can keep one at home and one in the car, vacation home, etc. Includes one waterproof miniature collar receiver, two waterproof miniature floating remotes, one Biothane collar, two sets of contact points (1/2" and 3/4"), contact point removal tool, dual battery charger (120V/220V), owner's manual with training tips, lanyard for the remote, color storage box.