--On: Press and hold the on/off button until the indicator lights up.

--Power off: Press and hold the on/off button until the light turns off.

--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.

--Bluetooth-compatible hands-free calling kit: In receiving mode, this product supports Bluetooth-compatible hands-free calling.

--When the phone calls, short press the m key to answer the call.

Feature:
1. Switch mode:
Rx: Receive Mode, Indicator: Blue LED
Tx: transmission mode, indicator light: red led
2. Receive mode:
The receiving mode can be used in home, car and other scenarios, allowing speakers without Bluetooth function to have Bluetooth function, realizing wireless connection with mobile phones, tablets and other devices, saying goodbye to the shackles of wired.
3. How to use:
First switch rt01 to receive (rx) mode, pairing name: rt01, find rt01 in the Bluetooth settings of the mobile phone for pairing. The blue light flashes for one second during the pairing process, and the blue light flashes every three seconds after successful pairing.
Plug one end of the audio cable into the audio input of the speaker and the other end into the audio of the rt01 to play music.
4. Send mode:
Boot Mode can be used on computers, TVs, and other non-Bluetooth-enabled sound source devices to help these devices stream sound to Bluetooth speakers, Bluetooth headsets, and more.
TX mode will automatically search for other Bluetooth receiving devices (such as Bluetooth headsets, Bluetooth speakers, Bluetooth receivers, etc.), the red light flashes for one second during the pairing process, and the red light flashes every three seconds after the pairing is successful.
5. How to use:
Connect one end of the audio cable to the audio output of the device and the other end to the audio of the rt01.
Make sure you are in tx mode (blinking red). rt01 will automatically search for Bluetooth headset or Bluetooth-compatible speaker pairing. After successful pairing, the sound of the TV or computer can be streamed to Bluetooth speakers and other devices for playback through RT01.

Description:
Product name: Bluetooth-compatible 5.0 adapter
Technology: BT5.0, A2DP, AVRCP
Operating Range: Up to 10m / 33ft (without any blocking objects)
Pairing name: RT01
Charging time: 2 hours
Working hours: 12 hours
Battery Type: Lithium Polymer (400mAh)
Size: 65x45x21mm
Weight: 40 grams
Colour: Black
Material: ABS
Packing list:
1 x Bluetooth-compatible 5.0 adapter, 1 x micro USB power cord, 1 x 3.5 to RCA cable, 1 x 3.5 to 3.5 cable, 1 x user manual
Note:
1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding.
2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.