For SONY WF-1000XM4 XM4 High-Performance replacement 2* Battery Pack CP1254 NEW
CP1254 (A3). Keep the battery away from fire. Never make the circuit short or squeeze the battery. for the SONY WF-XB700, WF-SP700N, WF-SP900, WF-1000XM3 wireless earphones. Battery Capacity: 60mAh.