1Mii Bluetooth 5.3 Transmitter Receiver for TV to Headphones, 3.5mm Jack Bluetooth Adapter, aptX Adaptive/Low Latency/HD Audio Adapter for Home Stereo, Airplane, Boat, Gym, Long Battery Life

I liked this product so much I have two! This device is super simple to use and I have not had any issues connecting them either as transmitters or receivers. In fact I recently used one as a transmitter on an old sound system to transmit to another attached to an old speakers system. Easy peasy! Simply holding down the number one button sets it to pairing mode and anything currently in pairing mode near it will connect. After that it connects automatically when both it and the paired device are turned on. I've not tried to use dual transmission/reception mode so can't say how that might work, but I hazard a guess most people won't be using that. I placed one in the headphone out on my old television and paired with a recent set of Sennheiser wireless headphones and can confirm there was no lag. Your experience may differ! For the most part I use the on old portable music devices so I can use wireless headphones with them and due to their compactness they add very little in the way of size and weight to what I carry. The instructions are fairly clear and there are a few other neat features in regards to selecting and showing what codec is being used through coloured lights. I would mention that I haven't noticed an auto off feature (I may be missing this) so it's best to remember to turn it off after use to avoid draining the battery. Great little device.

Great bit of gear,works a treat on flights.

Works well. However, while it charges from a usb-a port, it doesn't change from usb-c PD (basically any modern charger). Seems to be a design flaw where it's not spec compliant, and so a compliant charger won't negotiate to supply power.

The 1Mii Transmitter was just what I needed for a recent long haul flight, delivery was lightning coming the same day as ordering just in time for my flight the following day. Having this device meant I was able to use my noise cancelling AirPod Pros for every part of my travel, wirelessly with the device in transmit mode. That meant I was able to sit back and relax on the plane and watch the inflight films with my wireless headphones perfectly. It did sound weird at first, with audio only coming out of one side of the headphones and thought it was because I didn't have the 2 prong airplane adapter, however all it took was me double clicking the play button on the 1Mii device, to switch the audio quality as it mentions in its instruction manual, that solved the problem instantly and suddenly sounded fantastic. It also came in super handy when we found ourselves in a car that didn't have bluetooth connectivity, and just a 3.5mm AUX input, as we flipped the switch on the device from transmit (TX) to recieve (RX), allowing us to play music from our phone, to the 1Mii device and into the cars 3.5mm AUX port. It's a great little gadget to have in your arsenal when travelling and could save the day in a couple of situations I can think of. It's really lightweight and takes up almost no room in my bag sat with my chargers and the like. It's a rechargable device, I made sure it was fully charged before I left, and charged it once while away before the flight back, and I encountered no issues with the battery so it last a good while on a charge.

Paid close to 30 for an AptX enabled 5.3 transmitter according to the listing. - However I received a 5.2 Bluetooth device ML300 - EarFun Air Pro 3 will not engage in AptX mode no matter what I have tried. - Annoying auto off function, there is no waking from it, you physically need to turn the little switch to "off" then back to TX or RX as needed. If you plan to hide the device behind a monitor or TV you should plan to reach for it Every Time you want to use it! - Inconsistent connectivity when pairing with a second pair of headphones. One of the pairs will lose all sound, although in theory connected, until multiple restarts of the device. Plug And Pray! - Latency! Massive detectable latency when watching movies (lip-sync on videos is horrible) or playing games (you press a game button two times before hearing the first sound from the first action). Unfit for purpise and I regret making it.

Nice and helpful tool

So far so good. Does exactly what I wanted allowing me to TX to my BT headphones from my main HiFi. I was slightly underwhelmed with audio quality at first, but once I worked out how to get it to connect using APTX-HD (the instructions are not clear - you have to press the connect button a few times after it has made a basic connection), the increase in quality was very noticeable. Not tested battery life yet, but intiial impressions are excellent. Smaller than I expected, which is a good thing!

Very good device, I use it mainly for connecting my old hi fi to my phone via Bluetooth. It also served me well on a flight to florida, to connect my Bluetooth headphones to the in flight entertainment. Using the headphone jack cable supplied. I know I'll also use it in the future to connect two kids headphones to one iPad. Charge lasts a decent time.