Features:<br> With Aux audio interface, you can upgrade the car or home audio to a Bluetooth-compatible audio, listen to music wirelessly, and enjoy free music.<br> OLED work display screen, simple human-computer interaction operation, the operation is more convenient.<br> 3.5mm audio output interface design, flexible and more versatile. Back clip design, easy to carry.<br> Hands-free call, one-click answering of incoming calls. Built-in 250MA battery, long battery life.<br> This product is an OLED wireless audio receiver. After the mobile phones, computers, PDAs and other digital products are connected to the device, you can enjoy Bluetooth-compatible music or hands-free calls through the device.<br> <br> Specifications:<br> Model No: B31 Oled Bluetooth-compatible 5.0 Receiver<br> Support Protocol : A2DP,AVRCP etc.<br> Working Frequency 2.402GHz -2.480ghz<br> Receiving Sensitivity -90db At 0.1% BER<br> Working Current 30MA (Screen Off)<br> Built-in Battery 250MAh<br> Charging Current About 200MA<br> Charging Time: About 2 Hours<br> Use for Time 10h<br> Bluetooth-compatible Distance 10m (Open Area)<br> Charging Method: Micro Usb 5v<br> Output Connection Mode: 3.5mm Stereo Interface<br> Compatible With Androids, Ios System Mobile Phones And Pad, and Other Audio Equipment With Aux Input Function.<br> <br> Note:<br> Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand.<br> Please allow 0-1cm error due to the manual measurment.<br> <br> Package includes:<br> 1x Bluetooth-compatible 5.0 Transceiver<br> 1x Micro Usb Line<br> 1x 3.5mm Audio Cable<br> 1x Operating Instructions<br> Note: 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. Sold by-DIMEANI official store