Feature:1. [Upgrade Headphone] Universal adapter cable, upgrade your headphones to wireless headphones, use devices without headphone jack, very suitable for IE40 PRO.2. [Widely Applicable] After using this headset cable, your headset will be compatible with mobile phones, tablets, computers and other stereo transmitters.3. [Low Latency] The low latency codec ensures the highest wireless sound quality via and improves lip synchronization with compatible devices.4. [Sound Enhancement] On demand dynamic sound enhancement function, bass and voice enhancement mode, with music mode and game mode, can be switched by one button.5. [110mAh Battery] Built in rechargeable 110mAh lithium battery and ultra efficient 5.0 technology, providing up to 10 hours of talk time and 5‑7 hours of music playback time.How to Use:You can use it after connecting the headset.Specification:Item Type: Replacement Headset CableMaterial: Oxygen Free CopperCable Length: Approx. 90cm/35.4inCable Diameter: Approx. 2.0mm/0.08inColor: BlackBluetooth: 5.0Transmission Distance: Approx. 10m/32.8ftBuilt in Battery: 110mAh Lithium Battery (Shipped with Battery)Charging Time: About 1-2 HoursPlaying Time: About 5-7 HoursTalk Time: About 10 HoursStandby Time: About 100 Hours Package List:1 x Headset Cable1 x Charging CableNote:Manual measurement, please allow some errors.