1. You don' 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 . 3. With this vibrating dog collar, your dog become obedient and gentle. There are various vibration intensity settings to suit different-sized dogs. 4. Excellent dog training collar, this dog training collar still work well after your dog . 5. The timely response of the collar to the remote , 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 learn or not when the behavior is dangerous. Remote control/receiver battery: 300mAh/450mAh Charging voltage: DC5V/300mA Remote control/receiver charging time: 1-1 fully . 5 hours Charging interface: Micro-USB Wireless power: 20mW (13DBm) Operating Environment: 32F-104F, Less than 95%Rh Remote control/receiver standby time: Remote control: 20 days; receiver: 10 days Remote FM: 433M; (frequency shift key) Receiving Sensitivity: -126DBm Applicable dog breeds: small dogs, medium dogs, large dogs Colour:Black Material:plastic Package Contents: 1 x Dog Training Collar 1 x Remote Control 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.