Sennheiser MOMENTUM 4 Wireless review: the battery answer

1. Best battery for a long-haul

Sennheiser MOMENTUM 4 Wireless

Sennheiser publishes up to 60 hours. That is the difference between charging at the gate and not thinking about a charger for an entire two-week trip.

Our editorial score: 8.8 / 10

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Most battery specifications are a marginal improvement you will never notice. This one is a category difference. Sixty rated hours against a flagship norm of thirty does not make the headphone twice as good — it removes charging from your packing list entirely.

That is worth more on a complicated trip than any increment of canceling depth, because a flat flagship is worth exactly as much as a cheap headphone with charge in it.

What works on a plane

• +Up to 60 rated hours, roughly double the flagship norm
• +The 1.2 m 3.5 mm cable is in the box, so seatback screens work straight out of the bag
• +Fold-flat earcups make the carry case slim rather than deep
• +The 42 mm transducer is the most relaxed listen here over a very long session

What does not

• −Published measurements consistently place its noise canceling a step behind the Bose
• −The case is broad, so it eats width in a personal item even though it is slim
• −Fold-flat is not fold-up, so the footprint is larger than the Sony's

How it scores against the five travel axes

Cabin-noise reduction8.3

Battery on a long-haul9.8

Pack size7.6

Comfort past hour three9.3

Wired / IFE fallback9.0

Published specifications

Spec	Figure	Source
Battery	Up to 60 hours playback	Sennheiser
Weight	Approx. 293-295 g	Sennheiser / published reviews
Transducer	42 mm	Sennheiser
In the box	Carry case, USB-C cable, 1.2 m 3.5 mm auxiliary cable	Sennheiser
Folds	Fold-flat earcups	Sennheiser

Read the full Sennheiser MOMENTUM 4 Wireless review →

Buy it if your trips are complicated. Multiple legs, unreliable outlets, two weeks away, a rucksack that spends its days in transit — this is the headphone that survives all of that without you managing it. Buy it also if very long listening sessions are your normal, because the 42 mm transducer and the gentle pads make it the most relaxed listen on this site.

Do not buy it if absolute quiet is the goal, because published measurements consistently put it behind the Bose QuietComfort Ultra and generally behind the Sony WH-1000XM6 too. Do not buy it if carry-on volume is the binding constraint, because fold-flat is not fold-up and the case is broad.

The MOMENTUM 4 has competent adaptive noise canceling that takes a solid bite out of engine drone. What it does not do is reach the floor the Bose reaches in the deepest 50 to 150 Hz region, and published measurement-led reviews are consistent about that.

In a seat, the practical difference is that you will hear slightly more of the airframe than you would in the Bose, and you will probably compensate with a click or two more volume. Whether that matters depends on how sensitive you are to that specific fatigue. For many people the answer is honestly not much — which is why the battery argument wins as often as it does.

Sennheiser’s passive isolation is a real asset here, though. The pads seal well and the cups are deep, so a decent proportion of the reduction happens before the electronics are involved. That is the part that also helps against voices, which active canceling cannot touch — see active canceling versus passive isolation.

Sennheiser publishes up to 60 hours of playback, with fast charging. Here is what that means against a realistic set of trips:

The point of sixty hours is not that it is a bigger number. It is that charging stops being something you plan.

The honest counterpoint: if you sleep in a hotel with an outlet every night, thirty hours is already more than enough and you are paying for capacity you will never reach. This spec is a solution to a specific problem, not a general upgrade. See headphone battery life for long-haul flights for how to work out which camp you are in.

The earcups fold flat, so the carry case is slim in one dimension. What the MOMENTUM 4 does not do is fold up at the headband, which means the case keeps the full width of the headphone. It is a thin, wide object rather than a compact block.

That geometry suits some bags and not others. It slides beautifully into a laptop compartment and awkwardly into a cube. Against the Sony’s fold-up case it loses on total volume, and against the Apple AirPods Max, which does not fold at all, it wins comfortably. If this is your deciding criterion, best foldable noise-canceling headphones ranks the whole field by it.

At approximately 293 to 295 g this is not the lightest headphone here, and yet it is the one we would pick for a genuinely long session. The padded headband spreads the load, the earpads are deep and soft enough that the seal does not rely on crushing your ears, and the clamp is the gentlest of the flagships.

The 42 mm transducer matters here too, in a way that is easy to dismiss as spec-sheet trivia. A larger driver with a relaxed presentation is less fatiguing over eight hours than a smaller one pushed hard, and fatigue over eight hours is exactly the thing a long-haul flight is testing.

If you wear glasses, the gentle clamp is a genuine advantage — it is the firm-clamping designs that turn spectacle arms into pressure points. Best headphones for glasses wearers covers this properly.

Sennheiser ships a 1.2 m auxiliary cable in the box alongside the USB-C cable and the carry case. That is a standard 3.5 mm cable, not a proprietary 2.5 mm one, so replacing it if you lose it costs almost nothing and any spare aux cable in a drawer will do.

This puts the MOMENTUM 4 in the small group of flagships that work with a seatback screen straight out of the bag. Older twin-socket seats still want a two-prong adapter, which is not included — see airplane headphone jack adapters. And 1.2 m is genuinely a good length for a seat: long enough to reach an armrest socket, short enough not to tangle round a tray table.

• Sony WH-1000XM6 — half the battery, more canceling, 40 g lighter and a properly folding case. The better choice for a single long flight.
• Soundcore Space Q45 — 50 rated hours for far less money. If battery is the whole reason you are here, this is the cheaper route to most of the benefit.
• JBL Tour One M3 — 40 rated hours with canceling on and up to 70 without, plus the Smart Tx transmitter for in-flight entertainment.
• Bose QuietComfort Ultra (2nd Gen) — if you decide quiet beats endurance after all.

Where it sits in our roundups

The MOMENTUM 4 takes the battery slot in best headphones for long-haul flights and in best noise-canceling headphones for flights, and appears in best wired headphones for flights because of the included cable. The head-to-head is against the Sony WH-1000XM6.