

Why won’t the B03Pro+ pair with my Bluetooth headphones or speaker?
Turn off Bluetooth on nearby devices, place the two devices within 3 ft (1 m), and put both into pairing mode. If pairing still fails, reset both devices and try again.
Why is there still an audio delay?
For low-latency audio, your headphones or speaker must also support aptX Low Latency. Otherwise, a noticeable delay may occur.
Why don’t the volume buttons work with my TV?
The buttons control the volume of connected Bluetooth headphones or speakers. If they do not support Bluetooth volume control, adjust the volume on your TV instead.
Is it compatible with AirPods?
Yes, it works with most AirPods. However, AirPods Pro (2nd generation or 3nd generation) and AirPods 4 models may occasionally connect without sound. If this happens, press the play/pause control on the AirPods twice to restore the audio.
Why isn’t LDAC working?
In TX mode, use LDAC-compatible headphones, select LDAC on the adapter, and connect only one device. In RX mode, your phone must support LDAC; Apple devices do not, and some Android phones require LDAC to be enabled manually.
SPECIFICATIONS
1Mii Bluetooth Audio Transmitter Receiver

Watch TV Without Disturbing Anyone
Send TV sound to Bluetooth headphones so others can work, read or relax nearby.
You Use Headphones. They Hear the Soundbar.
Listen privately through Bluetooth headphones while others hear the TV through the soundbar.
Play Phone Music Through Your Home Stereo
Send music from your phone to your existing stereo wirelessly. No new stereo needed.
Watch Together Without Disturbing the Kids
Connect two Bluetooth headphones at once so you can watch together while the kids play nearby.
Hear More Detail. Keep TV Sound in Sync.
LDAC and aptX HD bring out more detail. aptX Low Latency helps match TV sound to the picture.
See What Is Connected
The LCD shows the mode, connected device and audio format, so setup is easier.
Keep Listening When You Leave the Room
Enjoy a stable connection up to 65 ft (20 m) indoors or 115 ft (35 m) outdoors in open areas.
Why won’t the B03Pro+ pair with my Bluetooth headphones or speaker?
Turn off Bluetooth on nearby devices, place the two devices within 3 ft (1 m), and put both into pairing mode. If pairing still fails, reset both devices and try again.
Why is there still an audio delay?
For low-latency audio, your headphones or speaker must also support aptX Low Latency. Otherwise, a noticeable delay may occur.
Why don’t the volume buttons work with my TV?
The buttons control the volume of connected Bluetooth headphones or speakers. If they do not support Bluetooth volume control, adjust the volume on your TV instead.
Is it compatible with AirPods?
Yes, it works with most AirPods. However, AirPods Pro (2nd generation or 3nd generation) and AirPods 4 models may occasionally connect without sound. If this happens, press the play/pause control on the AirPods twice to restore the audio.
Why isn’t LDAC working?
In TX mode, use LDAC-compatible headphones, select LDAC on the adapter, and connect only one device. In RX mode, your phone must support LDAC; Apple devices do not, and some Android phones require LDAC to be enabled manually.
SPECIFICATIONS
| Bluetooth Version | 5.3 |
|---|---|
| Audio Options | Optical & 3.5mm AUX |
| Audio Codecs in TX Mode | LDAC, aptX-HD, aptX-Low Latency, aptX, SBC |
| Audio Codecs in RX Mode | LDAC, aptX-HD, aptX-Low Latency, aptX, AAC, SBC |
| Operating Range | 115 ft (35 m) outdoors and 65 ft (20 m) indoors |
| Product Size | 4.33*3.27*0.99 inch |
| Product Weight | 103 g / 3.64 oz |
| Power Port | USB-C |
| Operating Voltage | DC-5V |
| Low Latency Compatible Devices | any aptX-Low Latency supporting devices |
1Mii Bluetooth Audio Transmitter Receiver
![]() 1Mii B03 | ![]() 1Mii B03+ | ![]() 1Mii B03Pro | ![]() 1Mii B03S | ![]() 1Mii B03Pro+ |
|---|---|---|---|---|
| Customer Reviews | ||||
| — | — | — | — | — |
| Price | ||||
| — | — | — | — | — |
| Type | ||||
| Bluetooth Transmitter Receiver | Bluetooth Transmitter Receiver | Bluetooth Transmitter Receiver | Bluetooth Transmitter Receiver | Bluetooth Transmitter Receiver |
| Bluetooth Version | ||||
| 5.3 | 5.3 | 5.3 | 5.3 | 5.3 |
| Audio Input Support | ||||
| AUX/ RCA / Optical / Bluetooth | AUX/ RCA / Optical / Bluetooth | AUX/ RCA / Optical / Bluetooth | AUX/ RCA / Optical / Bluetooth | AUX/ RCA / Optical / Bluetooth |
| Audio Output Support | ||||
| AUX/ RCA / Optical / Bluetooth | AUX/ RCA / Optical / Bluetooth | AUX/ RCA / Optical / Bluetooth | AUX/ RCA / Optical / Bluetooth | AUX/ RCA / Optical / Bluetooth |
| Audio Codec Support | ||||
| aptX AD/LL/HD/aptX/AAC/SBC | aptX AD/LL/HD/aptX/AAC/SBC | aptX AD/LL/HD/aptX/AAC/SBC | aptX AD/LL/HD/aptX/AAC/SBC | LDAC/aptX HD/LL/aptX/AAC/SBC |
| Extra Audiophile DAC | ||||
| ? | ? | ? | ? | ? |
| With Screen Dispaly | ||||
| ? | ? | ? | ? | ? |
| Independent Bypass Mode | ||||
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| TX & Bypass Mode | ||||
| ? | ? | ? | ? | ? |
| Support USB Drive Audio Input | ||||
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