Features 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 Cable Material: TPE, Oxygen Free Copper Bluetooth: Bluetooth 5.0 Transmission Distance: 10m/10.9yd Built in Battery: 220mAh Lithium Battery (shipped with Battery) Play Time: About 20 Hours Charging Time: About 2‑3 Hours Color: Black Compatible Model: for Sennheiser IE300 IE600 IE900 for SE215 SE315 SE425 SE535 SE846 for UE UE900 for AUDIOSENSE TK200 T100 for W Series: for W10 W20 W30 W40 W50 W60 W80 for ES Series: for ES10 ES20 ES30 ES50 ES60 for UM PRO Series: for UM PRO10 UM PRO20 UM PRO30 UM PRO50 for AM PRO Series: for AM PRO10 AM PRO20 AM PRO30 for XBA A3 XBA A2 XBA H3 XBA H2 HA FX850 and other MMCX interface headset Package List 1 x Earphone Bluetooth Adapter Cable 1 x Charging Cable 1 x Storage Bag