Bluetooth 5.0: Use BT V5.0, which has excellent wireless performance (backward compatible with BT V3.0 and V2.1).

Easy to storage: Prepare memory for paired devices.

Long battery life: The maximum transmission distance is more than 33 feet, a full charge can last for 15 hours, and just needs 2 hours.

Transmitter and receiver 2 in 1: Integrated solution for BT reception and transmission.

Description:
Name: Bluetooth audio adapter
BT version: BT 5.0
Battery capacity: 3.7V/300ma Working time: 8-12 hours
Charging current: 120mA, 2 hours fast charging frequency response: 20Hz~20KHz
Rated input: DC5V 500mA Sensitivity (SPL): 100 +-3dB
Applicable to all devices (smartphones, earphones, speakers, etc.) on any version of Bluetooth on the market, including: Bluetooth 1.0 / 1.1 / 1.2 / 2.0 / 2.1 / 3.0 / 3.1 / 3.2 / 4.0 / 4.1 / 4.2 / 4.0 and very fast.
feature:
1. Use BT V5.0, which has excellent wireless performance (backward compatible with BT V3.0 and V2.1).
2. Prepare memory for paired devices.
3. The maximum transmission distance is more than 33 feet, a full charge can last for 15 hours, and the USD charging cable needs 2 hours.
4. Integrated solution for BT reception and transmission
RX mode: Easily pair with smartphones, tablets, desktops and laptops that support BT.
TX mode: Easily pair with BT headphones, earbuds, speakers and other BT audio systems.
Plug and play-no drivers or software required.
feature
Start: The audio port is immediately plugged into the 3.5mm audio cable (blue light and green light flashing at the same time).
Pairing connection:
RX mode pairing
Turn on BT and select the "RX" receiving mode, and then enter the BT pairing mode (blue light flashes). Open the phone "Settings", search for BT devices to find the BT device "DL-LINK" to select and pair connections. The connection is successful (the blue light flashes slowly).
TX mode pairing
Turn on B, select the "TX" startup mode, and then enter the BT pairing mode (green indicator flashes). Turn on the BT receiving device (BT speakers, BT headphones, etc.), and then wait a few seconds. BT and the receiving device will automatically connect (green indicator light flashes slowly).
Mode switch:
Switch the send button to switch to the send mode, the 3.5mm audio port is "input". Switch the RX button to switch to receiving mode, and the 3.5mm audio port is "output".
Indicator light indication:
On: The blue and green indicator lights flash once.
Charging: the red light is on, fully charged: on.
RX mode pairing: the blue light flashes quickly; the pairing is successful (the blue light flashes slowly).
TX model pairing: the green light flashes quickly; pairing is successful: the green light flashes slowly.
Shutdown: Unplug the audio cable from the audio port; if it does not match for a long time, the device will automatically shut down.
Packing list:
Audio adapter * 1
3.5mm audio cable * 1
USB charging cable * 1
RCA cable * 1
Manual * 1
Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item,please make sure you do not mind before ordering.