Dogtra Surestim H Plus Training Collar -
Expand your SureStim H Plus to a two-dog system with an additional orange Rx collar. Select between nick, constant and nonstimulating pager vibration modes. Low-high output receiver for stubborn dogs. System has a 1/2-mile range. Fully waterproof receiver/collar. Powered by rechargeable NiMH batteries (Included). Collar only, does not include transmitter.