About this replacement
Designed for SanDisk devices. Compatible models include Sansa E200, Sansa E250, Sansa E250R, Sansa E260, Sansa E260R, Sansa E270, Sansa E270R, Sansa E280, Sansa E280R. Replacement part numbers include SDAMX4-RBK-G10, 54-57-00046. Key specifications: 3.7V, 750mAh, Li-ion.