Specifications:
Bluetooth-compatible: Bluetooth-compatible 2.1+EDR
Chip solution: BTRDA program
Output mode: 3.5mm audio interface
Frequency band: 44.1KHz / audio interface
Receiving distance: 5-10m
Interface: USB/AUX3.5mm
Standard accessories: 3.5mm audio cable
Line length: 240mm
Power supply mode: USB power supply 5V1A
Size: 53*21*11mm/2.09*0.83*0.43in
Weight: 7g

Instructions for use:
Audio cables must be used in this section!
1. Connect the speakers
In the first way, the speaker does not have a USB interface.
Plug the Bluetooth-compatible flash drive into the charger with a 5V USB port and connect the audio cable to the AUX port
The second way, the speaker has a USB interface
Plug the Bluetooth-compatible flash drive directly into the speaker USB port and connect the audio cable to the AUX port.
2. Pairing
Turn on the Bluetooth-compatible function of your phone (or computer), search for nearby Bluetooth-compatible devices, search and pair. After the pairing is successful, the indicator light on the Bluetooth-compatible receiver becomes slower!
After the pairing is successful, play the music in the phone.

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.