ABBIDOT T30 Dog Training Collar Electric Shock Strap for Large Dogs 3000ft 900m Canine Equipment Supplies No Bark AccessoriesSPECIFICATIONS Brand Name: ABBIDOT Item Type: Training Collars Origin: Mainland China Type: Dogs Is Smart Device: no Material: Plastic Model Number: T30 Item Type: Training Collars dog Batteries: 3 Lithium ion batteries required Application: Suitable for small medium large dog Features: Rechargeable, Waterproof, Durable Range: 3000 ft (900 m) Purpose: Dogs training Function: Shock Stimulation, Beep, Vibration Rate of Recurrence: 433. 92MHz Product