【HUMANE TRAINING MODES】The shock collar for dogs offer 0-99 levels of customization for static stimulation & vibration, a standard “tone” mode and led light mode. 【SIMULTANEOUS CONTROL and 2600FT REMOTE RANGE】Upgraded function allow you to pair receivers in the same channnel to correct your dogs behavior with beep, vibrate or shock mode simultaneously, or in different channels to control dogs individually. The remote can control range of up to 2600ft (875 yards). Freely train dogs in the backyard, the park, or anywhere else. No worry dogs go too far away. 【RECHARGEABLE】Long battery life, charge in 2-3 hours and last for 15-20 days. Ensure you an effective dog training. Also this dog training shock collar is size adjustable. 【WATERPROOF IP65】The dog shock collars receiver doesn’t need to be taken off when your dog goes for a swim, chases toys around a pool, or plays in the rain. 【Build-in LED Light】Ace Teah shock collar for 2 dogs have LED light built in receivers, which help you find your dog at night or any dark environment.