Operating range: up to 10 m / 33 ft (without any obstructions) Pairing model: KN321 Charging time: 2 hours Battery type: lithium polymer (200mAh) Power on: Press and hold the power on/off button until the LED lights up Shutdown: Press and hold the power on/off button until the LED goes out Charging: Use a DC-5V charger and a micro USB charging cable. The red light is on when charging. When the battery is fully charged, the red light goes out and the blue light comes on. Switch mode:

1. RX: Receive mode, indicator light: blue LED
2. TX: Transmit mode, indicator light: red LED RX mode: Pairing name: KN321, find the KN321 pairing in the Bluetooth settings of the phone. The blue light flashes twice per second during the pairing process, and the blue light flashes every three seconds after the pairing is successful. how to use:
3. Plug one end of the audio cable into the audio input of the speaker and the other end into the audio input of the KN321.
4. Make sure it is in RX mode (blue light flashes). Find the pairing name in the phone's Bluetooth settings: KN321 click to pair. TX mode: The TX mode will automatically search for other Bluetooth receiving devices (such as Bluetooth headset, Bluetooth speaker, Bluetooth receiver, etc.). During the pairing process, the red light flashes twice per second. After pairing, the red light flashes once every three seconds. How to use:
5. Plug one end of the audio cable into the audio output of the device and the other end into the audio input of the KN321.
6. Confirm that it is in TX mode (red light flashes). The KN321 will automatically search for Bluetooth headset or Bluetooth speaker pairing. Net weight: 62g Gross weight: 77g Packing size: 1039323mm/4.063.660.91in Product size: 444412mm/1.731.730.47in

Included: 1 X Bluetooth 5.0 Audio Transceiver Adapter 1 X Micro USB Power Cable 1 X RCA Cable 1 X 3.5mm Aux Cable 1 X Manual

The delivery time is around 10-20 working days after your purchase