Item Type: Bluetooth Headset Cable Material: TPE, Oxygen Free Copper Bluetooth: Bluetooth 5.0 Transmission Distance: 10m/32.8ft Built In Battery: 220mAh Lithium Battery (Shipped with Battery) Play Time: About 20 Hours Charging Time: About 2-3 Hours Color: Black Applicable for ATH IM04 IM03 IM02 IM01 IM50 IM70 Headphones, As Well As the Interface Conforms to the Headphones. Package List 1 x Bluetooth Headset Cable 1 x Charging Cable 1 x Storage Bag 1Widely Compatible: Bluetooth cable for ATH IM04 IM03 IM02 IM01 IM50 IM70 headphones, as well as the interface conforms to the headphones. 2Wireless Upgrade Cable: Bluetooth cable can upgrade your wired headphones to wireless headphones, making your headphones more convenient, and easily connect to Bluetooth to enjoy music. 320H Playing Time: Bluetooth cable built in rechargeable lithium battery and ultra efficient Bluetooth 5. 0 technology provide up to 20h playing time. 4Lossless Sound: Bluetooth headset cable has a lowlatency codec, which can ensure the highest wireless sound quality through Bluetooth and provide lossless sound quality. 5Multifunction Control: Bluetooth cable is ergonomically designed, equipped with a cord ear hook, a controller and an integrated microphone for call, volume and music playback. 6Compatible Devices: Bluetooth headset cable is compatible with mobile phones, tablets, computers and other Bluetooth devices.