Aetertek 216s-350s for 2 dogs training shock collar. Our high quality aetertek 216 series remote dog training system includes 7 levels of shock, 1 vibration and 1 sound to make it easy for you to find the correct level which works best for your dog. Receiver is 100-percent waterproof and lightweight with range of up to 400-yard which makes it great for any outdoor training. It can be used for many different training purposes, such as barking, digging, jumping on people, running away, chewing or any other bad habits. Aetertek 216 series is very effective and economic training device that works well at home and outdoors. Package content 1 transmitter 9-volt battery operated, 2 waterproof receivers, 2 strap adjustable from 12 to 24-inch long, 1 user manual, short and long contact points, shock test bulb and 1 pouch. 1 year warranty.