Upgrade your sound setup with the 1Mii ML300 Bluetooth 5.3 Transmitter & Receiver, a compact 2-in-1 wireless audio adapter built for TVs, headphones, speakers, and stereos. Whether at home, in the gym, or on the go, enjoy high-fidelity audio with the latest Bluetooth technology and aptX Low Latency.

Features:

• 🔄 2-in-1 Adapter: Use as a Bluetooth transmitter (TX) for TVs or a receiver (RX) for speakers and car stereos.

• ⚡ Bluetooth 5.3: Delivers faster, more stable connections and longer range than previous versions.

• 🎧 aptX Adaptive / HD / Low Latency: Synchronizes audio and video perfectly for gaming and movies (requires aptX-LL compatible headphones).

• 🔊 Dual Link: Connect two Bluetooth headphones or speakers at once for shared listening.

• 🔋 Long Battery Life: Up to 12 hours TX / 15 hours RX on one charge.

• 🔌 Wide Compatibility: Works with any device using 3.5mm AUX or 2RCA audio jacks — TVs, PCs, stereos, car systems, and more.

• 💡 Codec Indicator Lights: Easily check current audio quality mode — SBC (blue), aptX LL (white), aptX HD (green), aptX Adaptive (yellow).

Included:

• 1 × 1Mii ML300 Bluetooth Transmitter / Receiver

• 1 × 3.5mm Audio Cable

• 1 × RCA Audio Cable

• 1 × USB Charging Cable

• 1 × User Manual

How to Use:
As a Transmitter (TX):

1. Switch to TX mode.

2. Hold the Bluetooth button until the LED flashes blue/red.

3. Pair with your Bluetooth headphones or speaker.

4. Connect ML300 to your TV’s AUDIO OUT port.

As a Receiver (RX):

1. Switch to RX mode.

2. Hold the Bluetooth button until flashing blue/red.

3. Pair with your phone or tablet, then connect to your wired speaker.

Tech Specs:

• Brand: 1Mii

• Model: ML300

• Bluetooth Version: 5.3

• Audio Codecs: SBC / aptX LL / aptX HD / aptX Adaptive

• Range: Up to 50 ft

• Battery Life: 12–15 hours

• Input/Output: 3.5mm AUX, 2RCA

• Size: 1.96" × 1.37" × 0.31"

• Weight: 1.5 oz

Notes:

• Compatible with AirPods (except AirPods Pro 2nd Gen).

• Not suitable for musical instruments or mic-based calls.

• Ensure both devices support aptX LL for true low-latency performance.

1Mii ML300 2-in-1 Bluetooth Transmitter Receiver

Use 1Mii ML300 as a Bluetooth transmitter

1. Switch to "TX" mode

2. Long press the BT Button#1 for about 2 seconds to enter pairing mode(LED flashing blue and red)

3. Set your Bluetooth headphones/soundbar/speaker also enter pairing mode

4. After pairing successfully (LED stop flashing), connect the ML300 to the AUDIO OUT jack of PC/TV/MP3

Use 1Mii ML300 as a Bluetooth recevier

1. Switch to "RX" mode

2. Long press the BT Button#1 for about 2s to enter pairing mode(LED flashing blue and red)

3. Turn on the Bluetooth of your phone/tablet/laptop, tap "ML300" to connect.

4. After pairing successfully, connect the ML300 to the AUDIO IN jack of wired speaker/soundbar/earphones

Q1	Why the voice lag still here when use this Low latency ML300 Bluetooth adapter with my Bluetooth headphones?
A1	To achieve low latency, your Bluetooth headphones/speaker should also support function of aptX Low Latency. Or, the receiving device might use another codec (e.g. SBC, aptX), resulting in a 70-200ms audio delay which may be noticeable by some users.
Q2	What shall I do if I can not get ML300 Bluetooth Adapter to pair with my Bluetooth Headphones or Speakers?
A2	Turn off Bluetooth on all mobile phones or PC in house (Make sure your headphones/speaker is not paired with other device automatically during the process of pairing ML300). For first time pairing, make sure the pairing distance is within 1 meter. If still cannot get them paired, set both ML300 Bluetooth Adapter and your Bluetooth headphones or speakers to factory default. - Reset ML300: Long press the Bluetooth button #1 for about 7 seconds until the light flash white for 3 times.
Q3	Can it be used for guitar or piano?
A3	For live music or musical instruments like guitar or piano, we don't suggest using ML300, please use the specialized adapter.
Q4	How to change the audio codec?
A4	Please double-click the Bluetooth button #1 to cycle change to different audio codecs. SBC(blue)/aptX Low Latency(white)/aptX HD(green)/aptX Adaptive(Yellow). Note: If your Bluetooth device does not support aptX Low Latency/aptX HD/aptX Adaptive, the light on ML300 will not change to the specific colour to use the aptX Low Latency/aptX HD/aptX Adaptive audio codec.
Q5	Is it compatible with AirPods?
A5	Yes, it is compatible with AirPods, but it is INCOMPATIBLE with AirPods Pro 2nd Gen.
Q6	Does it support online calls or conference with a headset?
A6	1Mii ML300 doesn’t have a built-in mic, so it doesn't support any online calls or conference with a headset.
Q7	Does it work with any TV?
A7	Please make sure your TV has 3.5mm AUX AUDIO OUT jack or Headphone jack or 2RCA AUDIO OUT jack.
Q8	How to reset the 1Mii ML300?
A8	Please press and hold the Bluetooth button #1 for about 7 seconds until the LEDs flash purple for 3 times.