The dog training collar is designed for giving a successful training of no barking to you pet. It is safe for puppies and can effectively stop ill-timed barking. If you are worrying puppies’ disorder barking, just come and get it. Features: * Safe Training: Our collar receiver adopts soft silicon contact points to to avoid damage. It is safe for puppies and can effectively stop ill-timed barking. * 100% Weatherproof : Made of premium plastic and bulked with silicone cover, the collar receiver features strong weatherproof characteristic. * 3 Modes of Operation : Sound alert mode, shock mode and 99 levels of vibration are available. * Rechargeable : built-in with a stable Li-po battery, this collar allows recycle charging, which is durable to use. * For All Size Dogs : 67cm long strap and the adjustable design make it suitable for most large, medium or small dogs. Specifications: Color: Black Main Material: ABS&PU Leather Frequency: 433MHz Battery: 3.7V 300mAh LiPo Battery Working