Muswor Bluetooth Receiver Adapter Wireless Converter for Sennheiser Momentum / Momentum On-Ear / Momentum 2.0 / Momentum 2.0 On-Ear / HD1 Headphones with 2.5mm Jack Connector, Built-in Amplifier

Due to the dearth of reviews for this, I wanted to add mine. It is OK. Not great but being freed from wires makes up for shortcomings.I want to also acknowledge the humming/buzzing, though its low level enough that you mostly notice it when there is no music playing. The battery life is not great and the bluetooth battery level it tells your phone is inaccurate, it tends to die at 50%.However, there aren't many choices out there since it seems there are other rebrands of what appears to be the same manufacturer. Given the lack of options, and the fact that I really appreciate being freed from wires, this works well enough.

I have used it for 5 hours so far. Build quality is nice. Sound quality is great. Its a nice upgrade. Does exactly what u expect. Connects in half a second and if you put it on the bass mode, i think it sounds great. A tad more "umph" but not too much.Cons:At low volume u can hear input feedback. Not bad at all though. If you want to use them for studying with laid back low volume music, the best way is to get this adapter for everything else, and use cable for very low volume.

The options for a product like this are scant, looked forward to enjoying my Momentum's with this and its just crap. I didnt return it but should have. Bought this last year and maybe for people just wanting podcasts this is ok but for music its just not acceptable unless of course you dont care about the hissing. Wish I could give this a higher rating since I had high hopes.

loud buzzing at low volume and still noticeable at medium to high. not worth it

Battery life is not accurately depicted. It usually stops working at 50%. Battery lasts for about 8 hours when fully charged. Strange but whatever. The sound quality is fine although I am starting to experience bad latency. I’ve had this device for about 6-7 months now. The bass control is gimmicky and very poor. If I mute the volume of my iPhone, it either activates or deactivates bass boost. It doesn’t make the music sound any better and is rather really annoying. Not to mention it looks really weird(Almost like a juul hanging from my headset). The only reasons why i would recommend it is because of the price point and that it does what it’s supposed to do. There are other better options out there but they cost 50-60 dollars and I think that is a bit ridiculous.