Feature: 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. Specification: Item Type: BT Earphone Cable Core Material: Oxygen Free Copper Wire Length: Approx. 90cm/35.4in Wire Diameter: Approx. 2.0mm/0.08in Color: Black Suitable: Compatible with Earbuds Earphones Using 2 Pin 0.78mm Pin Configuration, 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 ZS10 ZS6 ES4 ZST ZSR Headphones, for NICEHCK NX7PRO NX7 NICEHCK DB3 NICEHCK NX7 MK3 TFZ Headphones and Other Compatible Headphones BT: BT 5.0 Transmission Distance: Approx. 10m/32.8ft Standby Time: About 100 Hours Charging Time: About 1-2 Hours Playing Time: About 8 Hours Talk Time: About 10 Hours Built in Battery: 110mAh Lithium ion Battery (Shipped with Battery) . Package List: 1 x BT Earphone Cable1 x Charging Cable Note: Manual measurement, please allow some errors.