Specifications:This bluetooth-compatible 5.0 adapter supports audio equipment with audio input and can realize the function of wireless audio reception and transmission.It can also automatically search for and connect to bluetooth-compatible devices to achieve wireless audio transmission.Built-in AEC echo cancellation and ANC noise cancellation circuit, it has gorgeous stereo and pure sound quality.Equipped with enhanced signal transmission circuit, so that the connection is faster and more stable.It is compatible with dual lossless audio formats.Suitable for Android, for iOS system mobile phones and for PAD, all bluetooth-compatible audio equipment, and audio device with audio input interface.Item Name: bluetooth-compatible 5.0 AdapterMaterial: ABSBluetooth Version: V5.0Wireless Distance: 10 MetersBattery Capacity: 250mAh(Included)Working Hours: 5Charging Port: Micro USBCharging Voltage: DC 5VAudio Input Mode: 3.5MMCalling: Not SupportedOutput Connection Mode: 3.5MM Stereo InterfaceInput Connection Mode: 3.5MM Stereo InterfaceFeatures: Fast & Stable Connection, Noise Reduction, DurableSize: 8.8cm x 5.5cm x 2.5cm/3.46" x 2.17" x 0.98" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible 5.0 Adapter1 x USB Charging Cable1 x 3.5MM Audio Cable1 x User Manual