Used Aetertek AT-919C 2-dog training system, complete set in carry case. Includes remote transmitter, 2 receiver collars (orange and grey straps), charging cables, and owner's manual. 10 levels, beep / vibration / shock, auto anti-bark, up to 1100-yard range, waterproof receivers. Remote powers on as pictured. Sold as-is, local pickup in Boulder - buyer can test at pickup. Cash only, no shipping, no deposits.