1. You don't have to worry about accidentally scaring your beloved puppy. This collar is soft and comfortable. The collar was used as a training tool rather than a punishment. 2. Only vibrations instead of vibrations, beeps, and vibrations are great for attracting a stubborn dog's attention and correcting his bad behavior without hurting him. 3. With this vibrating dog collar, your dog will become obedient and gentle. There are various vibration intensity settings to suit different-sized dogs. 4. Excellent dog training collar, this dog training collar will still work well after your dog swims. 5. The timely response of the collar to the remote command, the training collar can immediately prevent the dog from barking, digging, attacking, running away, and other bad behaviors, forming a good training method to help him learn or not when the behavior is dangerous.<br><br>Remote control/receiver battery: 300mAh/450mAh Charging voltage: DC5V/300mA Remote control/receiver charging time: 1-1 fully charged. 5 hours Charging interface: Micro-USB Wireless power: 20mW (13DBm) Operating Environment: 32°F-104°F, Less than 95%Rh Remote control/receiver standby time: Remote control: 20 days; receiver: 10 days Remote FM: 433M; FSK (frequency shift key) Receiving Sensitivity: -126DBm Applicable dog breeds: small dogs, medium dogs, large dogs Colour:Black Material:plastic<br><br>Package Contents: 1 x Dog Training Collar 1 x Remote Control<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.