DRYTEK Waterproof Design TechnologyWaterproof and submersible to 25 ft. Convenient docking station charges receiver in 2 hours (included)40-60 hours battery life between charges Weight: 1.1 lbs. Allowing you to add more dogs (up to 6 total) to your SD-1825 training system (not included), this original Collar Receiver for the WetlandHunterA 1825 is what will get the job done. Features DRYTEK Waterproof Design Technology, is waterproof and submersible to 25 ft, and comes with a convenient docking station that charges your receiver in only 2 hours. 40-60 hours battery life between charges. Weight: 1.1 lbs. Color: green. Manufacturer model #: SDR-ASportDOG BrandA SportHunterA SD-1825 sold separately and can be found through item search for item number 38-872-970-00.SportDOG BrandA WetlandHunterA SD-1825CAMO sold separately and can be found through item search for item number 38-872-972-00.