Sony LinkBuds S/ WFLS900N/C. 2 x Z52H 3.85V battery. Case battery. Battery Capacity : 3.85V 55mAh 0.21Wh. 1x charging case battery. Battery Size:7.3mm 18mm 34mm.
Centerpower IPC ZeniPower Z55H Replacement Battery for WF1000XM4 XM3 WF-SP900 Bluetooth Headset Battery
Genuine 2x ZeniPower Z55H 3.85V 270mwh SONY WF-1000XM4 Batteries
Sony WF-1000XM4 Earbud Zenipower Z55H Battery – Replacement Internal Cells (2x)
SONY WF-1000XM4 Battery - ZeniPower Z55H 3.85V 75mAh
ZeniPower Z55H Model for Sony WF1000XM4 Bluetooth Headset Battery Z55H
Sony WF-1000XM4 Earbud Zenipower Z55H Battery – Replacement Internal Cells (1x)