[4 Training Modes E-Collar For Dogs : 4 Safe effective training modes: beep (standard) vibration (1-3 levels) shock (1-99levels) and shock boost(10%). This dog training collar set makes training simple and effective by improving dog behavior in a humane and safe manner. Adjustable Pet E-Collar Fits All Size Dogs：This electric training dog collar for all breeds with neck sizes from 8 to 27.5 inches and weighs from 10-110 lbs. This e-collar strap is made of soft and durable nylon to protect your dog comfortably. Remote Control & Security Lock : This dog training collar offers a remote control to enable your pet to roam farther. This electric dog collar comes with a security lock to prevent accidental contact. IPX7 Waterproof E-Collar & 2 Channel ：The dog training collar with professional waterproof receiver allows your puppies to swim and play during rainy days. With its dual-channel design you can train two dogs at the same time. Fasting-Charging & Long Battery Life ：The battery of this rechargeable dog e-collar lasts for a long time it takes only 2-3 hours to be fully charged. The dog training collar can last up to 35 days of standby time and the remote 45 days]