Feature: One dog system with 1/2 mile range Small receiver (2′′x1.5′′x1′′, 2.4 oz) for dogs 5 pounds and larger Mini ergonomic “stopwatch” transmitter (2.64′′ diameter x 1.29′′ thick) is well-suited for small hands or in situations where discreetness is important Delivers a tapping sensation similar to vibration, but more intense, making it an effective addition to the stimulation User-selectable stimulation levels from 1 to 100 with additional boost stimulus selectable from 1 to 60 Includes two sets of contact points (5/8′′ and 3/4′′) Lithium-polymer rechargeable batteries with dual charger; 2-hour full charge, The Educator 1 Dog Mini Remote Training Collar ET-300 is a 1/2 mile range trainer that is especially made for smaller hands or for situations where discreetness is important. Utilizing “Lock and Set” technology, lithium polymer rechargeable batteries, waterproof floating remote, and waterproof receiver, the remote provides a very clean stimulation without the normal head jerking motion often found in other training collars. Includes one waterproof miniature collar receiver, one waterproof miniature floating remote, one Biothane collar, two sets of contact points (5/8′′ and 3/4′′), contact point removal tool, dual battery charger (120V/220V) with a 2-hour full charge, owner’s manual with training tips, lanyard for the remote and color storage box.,Feature: One dog system with 1/2 mile range Small receiver (2′′x1.5′′x1′′, 2.4 oz) for dogs 5