HQRP Phone Battery compatible with Clarity C435, C440, C600, W425, W425 Pro Cordless Telephone plus Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.6V; Capacity: 700 mAh; Ni-Mh; AAA Cells; Keep in touch with friends and family and never miss a conversation; Compatible with Original Battery; 200 Days warranty!