Specifications:
Bluetooth-compatible: V2.1
Support configuration files: A2DP, AVRCP
Receiving distance: about 10 meters
Call function: Built-in microphone, support for hands-free function.
Size: 60x20x8mm/2.36*0.79*0.31in
Weight: 7g

Instructions for use:
1. Plug the receiver into the speaker's USB port.
2. Turn on the Bluetooth-compatible mobile phone (or computer), search for the surrounding Bluetooth-compatible device, and find a device called BT-Dongle whose pairing code is 0000 (if asked). After the pairing is successful, the LED light will be slower.
3. You can select music from your phone or computer via Bluetooth-compatible and the speakers will play music.

Notes:
Please allow 1-3mm differs due to manual measurement.
Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.