HQRP 700mAh Battery compatible with SanDisk 54-57-00046 / SDMX4-2048 ; Lenmar PMPSD046 Replacement with Tool plus Universal Screen Protector HQRP&reg; MP3 Player Battery plus HQRP&reg; Universal Screen Protector; Battery Type: Rechargeable Lithium-Ion Battery; Capacity: 700mAh; 100% compatible with original battery and charger devices; No memory effect, the battery can be recharged without loss of capacity. 200 days warranty!