Bluetooth version: V5.0 Wireless distance: 10 meters Working hours: 5 Charging interface: Micro USB Charging voltage: DC 5V Audio input method: 3.5MM Not holding a call: not supported Output connection mode: 3.5MM stereo interface Input connection mode: 3.5MM stereo interface Support audio equipment with audio input to realize wireless audio reception and transmission Support automatic search and connection of Bluetooth devices to realize wireless audio transmission Built-in AEC echo cancellation and ANC noise cancellation circuit, gorgeous stereo, more pure sound quality Built-in enhanced signal sending circuit, the connection is faster and more stable without sound Compatible with dual lossless audio formats Compatible with: Android, IOS system mobile phone and PAD, and all Bluetooth audio equipment, audio equipment with audio input interface Packaging accessories: 1. Bluetooth music receiver transmitter 2. USB charging cable 3. 3.5MM audio cable Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item Please allow 0.1-1cm difference due to manual measurement, thanks Other accessory demos in pictures are not included. Size: 76*27.5*11.5mm Shipping color: black Shipment Quantity: 1