HQRP Battery compatible with Sportdog SportHunter 1200 model SD-1200 SR200-IM SWR/2 Remote Controlled Dog Training Collar Receiver plus Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 4.8V; Capacity: 750 mAh; Ni-Mh; Compatible with Original Battery; 200 Days warranty!