1、Widely Applicable: Headphones bluetooth cable for ATH CKS1100 E40 E50 E70 LS200 LS300 LS400 CKR90 CKR100 LS50 LS70 and other headphones with A2DC interface. 2、Upgrade Function: Wireless bluetooth cable can upgrade your wired headphones to wireless headphones, making your headphones more convenient, and easily connect to Bluetooth to enjoy music. 3、Long Standby: Headphones wireless upgrade cable has built in rechargeable lithium battery and ultra efficient Bluetooth 5. 0 technology to provide up to 20 hours of playing time. 4、HiFi Lossless Sound: Wireless bluetooth cable with low latency codec, it can ensure the highest wireless sound quality through Bluetooth and provide lossless sound quality. 5、Multiple Function: Headphones wireless upgrade cable is equipped with a cord ear hook, a controller and an integrated microphone for call, volume and music playback. 6、Wide Compatibility: Headphones bluetooth adapter cable is compatible with mobile phones, tablets, computers and other Bluetooth devices.