SportDOG 425/825 Series Reciver Battery Kit - The SportDOG Brand SD-425 and SD-825 Series Receiver Battery Kit includes a rechargeable battery, Operating Guide, gasket, and screwdriver. FieldTrainer 425, (SD-425), 425S (SD-425S), 425X, (SD-425X), 425XS (SD-425XS) WetlandHunter 425 (SD-425CAMO), 425X (SD-425XCAMO) SportHunter 825 (SD-825), 825X (SD-825X) SportTrainer 575 (SD-575/SD-575E) SportTrainer 875 (SD-875/SD-875E) YardTrainer 300 (YT-300) Rechargeable Battery Operating Guide Gasket Screwdriver