High-Capacity Replacement for the Following Battery Model/Part Numbers: A1773, YU10448-16022. Intended for/Compatible with the Following Wireless Headphones Models: Beats by Dr. Dre Beats X, Beats X, A1763, MLYE2LL/A, MR3L2LL/A, MNLV2LL/A, MLYG2LL/A. 3.7V(3.8V) 90mAh 0.33Wh Lithium-Polymer Extended Rechargeable Battery Pack. Includes Free Installation Tools (Soldering Iron Not Included). 1 Year Replacement Warranty. MPF Products® is a Registered Trademark.