2-Pack Z52H Replacement Battery Kit with Repair Tools for Sony LinkBuds S WF-LS900N Earbuds

Specifications Battery Part Number: Z52H Battery Type: Rechargeable Li-ion Battery Voltage: 3.85V Energy: 0.21Wh Compatible Models Sony WFLS900N/W , WFLS900N/B , WFLS900N/C Package Includes 2 × Z52H Li-ion Replacement Battery 1 × Repair Tool Set Important Compatibility Note Please check your original battery part number, earbud model, battery size, and polarity before ordering. Professional installation is recommended because earbud battery replacement may require disassembly and soldering.