FGN Dog Training Collar with Wireless Remote, Adjustable E Collar, Durable Water Proof Rechargeable Control Operation for Large, Medium and Small Dog This product includes: USB charger, remote control, collar & receiver, test light& contacts There are four remote modes :collar tone, shock, vibrate, remote tone. The collar tone setting can be set to L,M or H. The shocking setting can be set as low as 1 bar, or as 8 bars. The vibration setting can be set as low as 1 bar , or as high as 8 bars. The remote tone can be set to L,M,or H. Sleep mode design for you to save on battery life. The remote and receiver are programmed to enter sleep mode if they dont sense any movement or activity for a certain period of time. Easy to use. When you collar arrives , it will already be synced to the remote. If something happens and it becomes disconnected from the remote for any reason, you can simply reset the receiver and re-sync the remote. We strive to provide the highest quality pet supplies, with a customer support team truly above the rest. As always,all the our products are backed by our warranty. If you ever need anything, please contact us and we will do everything possible to accommodate you.