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 Adapter Material: ABS Bluetooth Version: V5.0 Wireless Distance: 10 Meters Battery Capacity: 250mAh(Included) Working Hours: 5 Charging Port: Micro USB Charging Voltage: DC 5V Audio Input Mode: 3.5MM Calling: Not Supported Output Connection Mode: 3.5MM Stereo Interface Input Connection Mode: 3.5MM Stereo Interface Features: Fast & Stable Connection, Noise Reduction, Durable Size: 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'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 Adapter 1 x USB Charging Cable 1 x 3.5MM Audio Cable 1 x User Manual