"SportDOG WetlandHunter Add-A-Dog Receiver CollarAdd another dog to your current SportDOG electronic collar system or replace a lost or broken collar receiver with the SDR-FC Add-A-Dog Camo Receiver. The SportDOG WetlandHunter Add-A-Dog Receiver Collar is waterproof and submersible to 25 ft. Our Add-A-Collar features a low battery detect feature as well as replaceable, rechargeable NiMH batteries. The receiver collar has 15 to 20 hours ""on-time"" between charges. The original collar receiver for the WetlandHunter 400 and 800 systems, this unit is compatible with these transmitters: SD-105/105S, SD-400/400S, SD-400CAMO, SD-800, SD-800CAMO, SD-1800, SD-1850, SD-2000, SD-2500, SD-3200."
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