RS11 2 in 1 Ultrasonic Dog Training Collar

Got this 2 in 1 ultrasonic dog training collar, model RS11. It's brand new in the box. It uses ultrasonic sound and beeps to help with training instead of the harsher shock methods. Says it works for all breeds and has a pretty decent range on the remote. Good if you're trying to work on barking or just general behavior without being too intense. Box is a little worn but everything inside is fresh.