𝗨𝗽𝗴𝗿𝗮𝗱𝗲𝗱 2pack Z55H Battery, Compatible with for Sony Headset WF-1000XM4, Truly High Endurance Wireless Earbud Headphones 3.85V Li-ion Battery with Professional Repair Tool Kit
✔️【Battery specification】Actual measured dimensions (mm): D5.5 x W12.
✔️【High-Quality Products】New upgrade with Z55H battery is made of Class A high quality batteries and with CE, FCC, UL, PSE and ROHS certification. Build-in microchip to prevent over-charging,over-discharging and over-heating
✔️【Quality Customer Service】Your satisfaction is our greatest motivation, if you have any questions, Please feel to contact us. We offer a 30-day money-back, 12 months after-sales product and 24 x 7 email support. Thank you for your support.