Train up to 2 dogs with one Elite remote transmitter (not included) Works with Elite Remote Trainers: Elite Little Dog Remote Trainer (PDT00-13623) and Elite Big Dog Remote Trainer (PDT00-13625) For dogs 40+ pounds Range up to 1,000 yards 15 levels of static correction levels plus instant +2 Boost button Tone-only mode gets your dog"s attention with a beep Durable, waterproof receiver collar Good/low battery indicator Uses rechargeable battery (included) Collar color- black