Review on PECOLE Dog Training Collar for 2 Dogs: Waterproof Rechargeable Shock Collar with Remote for Small, Medium, and Large Dogs - Electronic Dog Collars with Beep, Vibration, and Shock Modes by Gina Cravalho

Needed a training collar for a puppy and a screaming cat. The beep was enough to stop the cat from howling. For the pup, the beep was used as a warning when ignored, the vibration was the second warning that kept him from doing most things, and the shock was almost never used except on the minimum setting for an emergency "immediately." stop” or punishment. I wish it had two receivers, one for each collar but it seems a lot of collars are like that now but for the price I paid they are excellent with a long battery life that lasts for days. Be sure to tighten the metal parts on the collar. collar before use, otherwise they will fall out over time due to scratches or movements.