🎧Model: Z55H battery.Replaceable For Sony Wf-1000XM4 1000XM3 .
🎧 Actual measured dimensions (mm): D5.5 x W12
🎧 Size Fit: 100% Compatible with original battery
🎧 Battery Voltage:3.85V Battery Capacity:75mAh
🎧【After-sale service】We guarantee 30 days return/exchange policy and 12-month warranty; 24 x 7 email support. Our dedicated customer support team is available 24 hours a day to help you.