NOTE: sony wf- 1000xm3 1:Replace the battery 2:Please restore the headset app to the factory settings,And update the latest firmware. 3: Charge the headset to 100 Percent . 4:Otherwise, the battery cannot reach the maximum capacity. Type Designation: VARTA CP 1254 Cell Code: ICR1254 Nominal Voltage: 3.7V Typical Capacity: 60Mah Diameter: 12.1 +0.0/-0.3 mm Height: 5.4 +0.2/-0.1 mm Weight.approx: 1.6 +0.2/-0.2 g Replaceable earphone brands and models: B&O H5 SONY WF-1000X -1000XM3 WF-SP600 700 900 WF-XB700 Samsung Galaxy Buds Jabra Rox TWS If you don't need a soldering pad for your headset, please remove the soldering pad with a nail clipper!!! Please look at our description picture carefully, it needs some professional skills and tools, if you have any questions after purchase, please contact me, we will solve the problem for you within 24 hours, please!!