YOCOWOCOUpgraded Wireless Bluetooth 5.0 Adapter for Bose QuietComfort QC 25 with aptX/Mic/Volume Control, Black

Everything feature this product offers, they are all great. The microphone audio quality is great, the battery is amazing, the fit is good. And it fills in a gap, so we don't have to replace out entire headphones just because they are not being wireless.

I was sitting at home a week before a long haul flight and realised that my phone didn't have a jackplug and that playing music to my now, oldish but still great Bose headphones, would be impossible as they don't have bluetooth. A long search revealed lots of bluetooth converters which were quite bulky but had great battery life. I then came across the YOCOWOCO Bluetooth adapter. After looking at similar products I decided to go for the 5.0 of the YOCOWOCO (stupid name!). I'm glad I did. Not only is it a great fit for the headphones and looks just like the existing headphone casing but it also works really well. Battery life is acceptable - who listens to headphones for 6 hours at a time anyway - and the recharge rate is pretty quick. I didn't hear any interference with other bluetooth devices around me on the flight and the sound quality is great. I was sceptical before I bought the adapter but am now the happy owner of bluetooth compatible headphones. A great product!

I have an older single Bluetooth adapter for my Bose headphones which was ok but having it dangling of the headphones was a bit annoying. In addition, the jack didnt alway make a good connection which meant loss of one channel from time to time.The new Bluetooth adapter is a huge improvement. It sits really well on the headphones with a very positive connection. The controls are quite neat and easily accessed once I was familiar with them. The connection process worked first time and took seconds. The build quality is good enough that it matches the Bose headphones and looks like it is part of the them when it fitted rather that a cheap add-on. I’ve seen other reviews that say the build quality is poor. I just don’t see that. The Bluetooth range is adequate. I’ve tested it to 15 feet in line of site to my iPhone 8 before the signal started to break down. I only got this yesterday and have so far had 3 hours from the battery. I can only hope I get the promised 6 hours- I’ll update if I don’t.The only design fault I have identified is that the charge port is on the wrong side. The only way I can connect the mini usb is to remove the device from the headphones. If the socket had been on the other side. I could charge it in place and avoid the wear and tear of constantly removing and refitting the device from the headphones.All in all, I’m very happy so far.

It works really well.

I've had my Bose QC25 for a lot of years now. Superb headphones, but I was starting to have Bluetooth Envy towards owners of the current wireless versions. No more! The adapter fits tightly to the earpiece profile, is easy to pair, and sounds as it should, no obvious change. It also fits in the case when still fitted - good news. The only two 'negatives' I have are small. It needs to be charged, and sadly the cable entry is not quite in the right place to be able to charge it while fitted to the headphones. It has to be taken off. I see a different version has the charge socket in the end of the adapter, which is better. The other thing is that the control buttons on the device are very low profile, and not so easy to identify by touch alone. It's going to make for fumbling until get used to them. Apart from that the 'phones' have a new life

Sound quality is great but maybe too loud, can't turn it down low enough for background music. Fits nicely, looks good, charges OK. The real issue is that the microphone does not work well enough - people could not hear my calls properly and you end up with a raised voice. Returned it.

It initially worked but after a couple of months no sound would come through, just a high pitched buzzing. Warranty is 30 days which is not great.Sound was ok, battery life and range were acceptable. No connection issues.Price is cheap compared to others. It appears I just got a malfunctioning one.Potential big issue though - using the device with noise cancelling on can cause the device to lose connection - according to Amazon customer support. I did not have this problem but the device is not as advertised if noise cancellation cannot be used with it!

No loss of sound quality. Nice and light too does not affect the headset.