Feature:1. COMPATIBILITY: Headphone bluetooth adapter cable is designed for for Sennheiser IE300 IE600 IE900 headphones, upgrade your headphones to wireless headphones.2. WIRELESS BLUETOOTH: Earphone bluetooth cable can be used for devices without a headphone jack and is compatible with phones, tablets, computers and other Bluetooth stereo sound transmitters.3. LOSSLESS SOUND QUALITY: MMCX bluetooth adapter cable low latency codec, which ensures the highest wireless sound quality via Bluetooth, provides lossless sound quality.4. LONG BATTERY LIFE: MMCX bluetooth cable has a built in rechargeable lithium battery and ultra efficient Bluetooth 5.0 technology, providing up to 20 hours of playback time.5. WITH MICROPHONE AND CONTROLLER: MMCX bluetooth adapter cable has an ergonomic design with a soft wire ear hook and a controller and integrated microphone for calls, volume and music playback.Specification:Item Type: Earphone Bluetooth CableMaterial: TPE, Oxygen Free CopperBluetooth: Bluetooth 5.0Transmission Distance: 10m/10.9ydBuilt in Battery: 220mAh Lithium Battery (shipped with Battery)Play Time: About 20 HoursCharging Time: About 23 HoursColor: BlackCompatible Model: for Sennheiser IE300 IE600 IE900for SE215 SE315 SE425 SE535 SE846for UE UE900for AUDIOSENSE TK200 T100for W Series: for W10 W20 W30 W40 W50 W60 W80for ES Series: for ES10 ES20 ES30 ES50 ES60for UM PRO Series: for UM PRO10 UM PRO20 UM PRO30 UM PRO50for AM PRO Series: for AM PRO10 AM PRO20 AM PRO30for XBA A3 XBA A2 XBA H3 XBA H2 HA FX850 and other MMCX interface headset.Package List:1 x Earphone Bluetooth Adapter Cable1 x Charging Cable1 x Storage Bag