F520 Mini Earphone Headset Retractable Cable, Accessory Version V5.3 Type C USB
Model: lavalier Headset F520. BT version: V5.3. 1 Piece Earphone. 1 Piece USB Charging Cable. Version 5.3: Lower power consumption and smoother. Wire length: About 35CM. We'd like to settle any problem in a friendly manner.