PushingBest QC 25 Wireless Bluetooth 5.0 Adapter for Bose QuietComfort 25 Headphones, Professional Design With QC 25 Upgrade Additon, Black

Professional design, compatibility with the Bose QC25 model.Charging 2 hours, Working 6 hoursHow to use: Put the adapter into your headphone. Long press the power button for 3 seconds on the adapter.Attention:1.Store in a cool, dry place.2.When long time storage, charging before using.3.Do not use any sharp objects in connect with adapters.4.Do not put adapter at a highter or lower temperature....