1、[Upgrade Parts] Headphone BT adapter cable, you can upgrade your wired headphones to wireless headphones, making your headphones more convenient, and easily connect to BT to enjoy music. 2、[Low Latency] BT headset cable has a built in low latency codec to ensure lag free music and lossless sound quality. One click switch between music mode and game mode, suitable for music and game lovers. 3、[Rechargeable] Headphone adapter cable has built in rechargeable lithium battery for up to 10 hours of talk time and 8 hours of music playback. Support one to two function, can connect two phones at the same time. 4、[Compatible] Wireless earphone cable, compatible with earbuds earphones using 2 pin 0.78mm pins, including for Massdrop x NuForce EDC EDC3, for Massdrop x, for Noble X and for Kaiser 10 and for Massdrop Plus BL03 TRN V90 V80 AS10, etc. 5、[Easy To Use] Ergonomically designed replacement earphone cable with flexible earhook, controller and integrated mic for calls, volume and music playback. Compatible with BT devices such as cellphones, tablets, computers, etc.