Sennheiser Momentum Free review

Super portable wireless earphones offer brilliant sound for a price that's worth paying

TechRadar Verdict

A superb pair of in-ear wireless Bluetooth earphones - they're not cheap and the battery life is only 6 hours but if you're looking for an ultra portable product with superb sound quality you're on to a winner here


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    Fantastic sound quality

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    Ideal for commuting

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    Fast charging


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    Only 6 hours battery life

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    Use the supplied USB cable

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If you’re looking to buy a new pair of wireless in-ear Bluetooth headphones you could do a hell of a lot worse than the Sennheiser Momentum Free. They sit at the ultra portable end of Sennheiser’s best selling Momentum series of consumer headphones and earphones and they weigh in at a cost of $185 in the US and £169.99 in the UK.


They’re not wireless earbuds in the same vein as the Apple Airpods - the two buds are connected by a wire which can go either behind or in front of your neck, with an inline clicker on the right and a battery cell on the left. So they sit between that super compact Airpod design and something more like the Sennheiser Momentum In-ear Wireless which uses a neck band to add more battery life.

These earphones will pair with two devices at once so it’s super easy to listen to music through your laptop and then take a call on your phone without disconnecting or popping one of the ears out.

The stainless steel earbuds are magnetised, so when you’re out and about and not using them you are supposed to be able to wear them around your neck without the risk of losing them. The idea is that they stick magnetically together in front of your neck but honestly I found this feature to be sorely lacking - the magnets are simply too weak so even a gentle shake, a very light jog or sometimes no movement at all is enough to detach them. More than once while I was testing they almost fell off my shoulders without me noticing.

Bluetooth 4.2 and and apt-X supply the high quality and power efficient audio connection to your devices - though missing in action are apt-X HD, noise cancellation and NFC pairing. Most people won’t miss these high-end features, and really you can't expect them with lightweight earphones like this, but it’s worth considering if you absolutely must have the latest features over lightweight portability. Note that some retail listings give NFC as an included feature but this product definitely doesn’t have NFC.

You do get a nice leather zip travel case though and you are going to want to keep these things safe and protected.

Not gym friendly

It's worth noting at this point that despite the ultra lightweight design of these headphones, they're not particularly well suited to using while running or when at the gym. The earbuds will start to pop out of your ears when you introduce sweat into the equation.

So you'll probably get away with a light run but if you're looking for a pair of ultra lightweight earphones to use at the gym there's an obvious reason why Sennheiser has a similar but separate product - the Sennheiser CX Sport.

Battery life

The stated battery life on the Momentum Free is 6 hours and my testing just about verified this. They’ll hit 6 hours pretty consistently and they charge from flat to max in about an hour, but don’t expect to get a cheeky extra 30 mins - the 6 hours really is a maximum. You need to be careful how you charge these headphones too - always use the supplied cable. There is absolutely no mention of this in the supplied manual but I managed to kill the first pair I tested by plugging them into a phone wall charger using a third party high capacity USB cable - it killed the battery and my first pair of Free’s never woke from their coma after that.

If you stick to the supplied cable though you won’t have a problem and even a standard USB port on a laptop is powerful enough to charge them up quickly - just 10 mins will give you an hour of charge. There’s no visual battery indicator to speak of but when you’re not playing music if you give a quick tap of the ‘vol down’ button on the clicker a friendly woman will let you roughly how much charge you have, plus when you’re really low the LED will flash orange.

Sound quality

These wireless earphones are not cheap by any measure and so it doesn’t matter how good they look (very good) and how premium they feel (very premium) - they need to sound good. They do.

No matter what you’re listening to - Spotify playlists, podcasts, audiobooks, radio streams, Tidal albums - everything sounds fantastic. Balanced and detailed with just the right amount of punch and crispness. Bass is nice and tight and offers something for everyone - whether you’re a bass head or someone who prefers a more authentic flat sound, the Sennheiser Momentum Free won’t disappoint you. They’re surprisingly well rounded. The midrange is also unusually wholesome and doesn't give you that disappointing hollow sound you get from products that amp up either the bass, treble or both in the absence of true audio excellence and professional grade calibration.


The Sennheiser Momentum Free in-ear Bluetooth headphones are brilliant. They sound really fantastic and the lightweight portability of the design makes them super easy to get around with. Admittedly they are quite pricey and the 6-hour battery life makes them inappropriate for travel or any other kind of use where you might not have regular access to USB power. But as an everyday pair of ultra portable in-ear wireless headphones for commuting they’re superb.

James Rivington

James was part of the TechRadar editorial team for eight years up until 2015 and now works in a senior position for TR's parent company Future. An experienced Content Director with a demonstrated history of working in the media production industry. Skilled in Search Engine Optimization (SEO), E-commerce Optimization, Journalism, Digital Marketing, and Social Media. James can do it all.