2 x SONY WF-XB700 WF-SP700N WF-SP900 WF-1000XM3 Batteries CP1254 (A3) 3.7V 60mAh
CP1254 (A3). Battery Capacity: 60mAh. for the SONY WF-XB700, WF-SP700N, WF-SP900, WF-1000XM3 wireless earphones. Keep the battery away from fire. Never make the circuit short or squeeze the battery.