36 facts in comparison

Sennheiser MOMENTUM 4 Wireless vs Anker Soundcore P31i

This comparison puts the Sennheiser MOMENTUM 4 Wireless and Anker Soundcore P31i side by side — two headphones measured against the same 36-spec sheet, with every meaningful gap scored and explained. On our weighted VS Score the Sennheiser MOMENTUM 4 Wireless finishes ahead, 81 to 74 — a solid lead.

The single biggest measurable gap is driver size: 42 mm vs 11 mm. None of our retail partners currently lists the Sennheiser MOMENTUM 4 Wireless, so availability may be limited and price cannot factor into this comparison. A transparency note before you dive in: the spec sheets are Sennheiser MOMENTUM 4 Wireless 64% and Anker Soundcore P31i 92% complete. Anything unverified shows as Unknown and is left out of the scores — we never estimate a missing value.

SoundqualityFeaturesBatteryConnectivityComfort

Tap a category to see which one wins it.

81Points
74Points

Where the Sennheiser MOMENTUM 4 Wireless beats the Anker Soundcore P31i

  • 31 mm more driver size ?42 mm vs 11 mm
  • 14 Hz less lowest frequency ?6 Hz vs 20 Hz
  • Has aptX, aptX Adaptive ?
  • Has in-ear detection ?
  • 52 h more battery life (ANC on) ?60 h vs 8 h
  • Over-ear Type ?Over-ear vs In-ear
  • Has foldable ?
Scroll down for more details

Key real-world differences

The spec sheet pulls in both directions. These are the gaps big enough to shape the decision — with the actual figures, and what each one means in real-world use.

  1. Driver sizeSound quality
    42 mm vs 11 mm — 3.8× more for the Sennheiser MOMENTUM 4 Wireless

    Larger drivers can move more air for fuller sound.

  2. Battery life (ANC on)Battery
    60 h vs 8 h — 7.5× more for the Sennheiser MOMENTUM 4 Wireless

    Listening time with active noise cancellation enabled.

  3. Lowest frequencySound quality
    6 Hz vs 20 Hz — 70% less for the Sennheiser MOMENTUM 4 Wireless

    A lower figure means deeper bass response.

  4. In-ear detectionFeatures
    Yes vs No — only the Sennheiser MOMENTUM 4 Wireless has it

    Pauses playback when you remove an earbud.

  5. TypeComfort
    Over-ear vs In-ear — advantage Sennheiser MOMENTUM 4 Wireless

    The wearing style of the headphones.

Which one should you buy?

There is no single answer — it depends on what you will actually use it for. Match your priority to the pick below.

  • Best for sound quality Sennheiser MOMENTUM 4 Wireless takes the category 73 to 47 — driven by driver size (42 mm vs 11 mm).
  • Best for features Sennheiser MOMENTUM 4 Wireless takes the category 100 to 93 — driven by in-ear detection (Yes vs No).
  • Best for battery Sennheiser MOMENTUM 4 Wireless takes the category 100 to 83 — driven by battery life (ANC on) (60 h vs 8 h).
  • Best for connectivity Anker Soundcore P31i takes the category 100 to 0 — driven by microphones (4 vs 6).
  • Best for comfort Sennheiser MOMENTUM 4 Wireless takes the category 100 to 0 — driven by type (Over-ear vs In-ear).
  • The safe all-rounder Sennheiser MOMENTUM 4 Wireless wins more of the categories that carry real weight, topping the overall VS Score at 81.

Where each one falls short

Sennheiser MOMENTUM 4 Wireless

  • Impedance: 470 Ω vs 14.2 Ω
  • Highest frequency: 22,000 Hz vs 40,000 Hz
  • Microphones: 4 vs 6
  • 13 specs are unreported (shown as Unknown) and excluded from its scores.

Anker Soundcore P31i

  • Driver size: 42 mm vs 11 mm
  • Battery life (ANC on): 60 h vs 8 h
  • Lowest frequency: 6 Hz vs 20 Hz
  • 3 specs are unreported (shown as Unknown) and excluded from its scores.

What matters to you?

Drag the sliders to weight each category and re-rank the products to suit your priorities.

Sound quality
Features
Battery
Connectivity
Comfort
Your ranking
Sennheiser MOMENTUM 4 WirelessYour pick80
Anker Soundcore P31iYour pick72

Score breakdown

Sound quality
Sennheiser MOMENTUM 4 Wireless73
Anker Soundcore P31i47
Decided by driver size (42 mm vs 11 mm) and lowest frequency (6 Hz vs 20 Hz).
Features
Sennheiser MOMENTUM 4 Wireless100
Anker Soundcore P31i93
Decided by in-ear detection (Yes vs No).
Battery
Sennheiser MOMENTUM 4 Wireless100
Anker Soundcore P31i83
Decided by battery life (ANC on) (60 h vs 8 h).
Connectivity
Sennheiser MOMENTUM 4 Wireless0
Anker Soundcore P31i100
Decided by microphones (4 vs 6) and Bluetooth version (5.2 vs 6.1).
Comfort
Sennheiser MOMENTUM 4 Wireless100
Anker Soundcore P31i0
Decided by type (Over-ear vs In-ear) and foldable (Yes vs No).

How the VS Score works — and what it can’t tell you

Every measurable spec is scored relative to this matchup: the best value here earns 100%, the worst 0%, and everything between scales linearly. Each spec then counts according to an editorial weight that reflects real-world impact — a battery-capacity gap moves the score far more than a colour-options list. The category scores above are the weighted results inside each group, and the overall VS Score rolls all of them together; the evidence line under each category names the specs that actually decided it.

Unknown values are never estimated. A spec a product doesn’t report simply drops out of that product’s scoring — it isn’t penalised with a guess — and a spec only one side reports can never produce a “win”. The trade-off is honest but real: a thinner spec sheet means a score built on fewer data points, which is why the completeness figures are disclosed under About this data.

Most importantly: a spec-sheet lead is not the same as a better product. Megapixels, gigahertz and benchmark points describe capacity, not experience — image processing, software optimisation, thermals, haptics and ergonomics decide how a device actually feels, and no table captures reliability or long-term support quality. Treat the scores as a structured summary of what can be measured, read the caveats under each key difference, and use the weight tuner to re-rank the comparison by what matters to you.

Sound quality

Driver size ?
42 mm
11 mm

Larger drivers can move more air for fuller sound.

Driver type ?
Dynamic
Dynamic

The driver technology (e.g. dynamic, planar magnetic).

Lowest frequency ?
6 Hz
20 Hz

A lower figure means deeper bass response.

Highest frequency ?
22,000 Hz
40,000 Hz

A higher figure means more detailed treble.

Frequency response ?
6 Hz to 22 kHz
20 Hz – 40 kHz

The full range of frequencies the headphones reproduce.

Sensitivity ?
106 dB
? Unknown (Anker Soundcore P31i)

Higher sensitivity plays louder from the same volume level.

Impedance ?
470 Ω
14.2 Ω

A lower impedance is easier to drive from phones and laptops.

Bluetooth codecs ?
Sennheiser MOMENTUM 4 WirelessSBCAACaptXaptX Adaptive
Anker Soundcore P31iSBCAACLDAC

Higher-quality codecs carry more detail; more support means better device matching.

Spatial audio ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
Anker Soundcore P31i

Creates an immersive, three-dimensional soundstage.

Hi-Res audio ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
Anker Soundcore P31i

Plays back high-resolution audio above CD quality.

Features

Active noise cancellation ?
Sennheiser MOMENTUM 4 Wireless
Anker Soundcore P31i

Electronically cancels background noise.

Adaptive ANC ?
Sennheiser MOMENTUM 4 Wireless
Anker Soundcore P31i

Automatically tunes noise cancelling to your surroundings.

Passive noise reduction ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
Anker Soundcore P31i

Physically blocks outside noise with a tight seal.

Ambient sound mode ?
Sennheiser MOMENTUM 4 Wireless
Anker Soundcore P31i

Lets outside sound in so you stay aware of surroundings.

Customisable EQ app ?
Sennheiser MOMENTUM 4 Wireless
Anker Soundcore P31i

A companion app lets you tune the sound to taste.

Voice assistant ?
Sennheiser MOMENTUM 4 Wireless
Anker Soundcore P31i

Summon a voice assistant hands-free from the earbuds.

Touch controls ?
Sennheiser MOMENTUM 4 Wireless
Anker Soundcore P31i

Tap or swipe the earbuds to control playback and calls.

In-ear detection ?
Sennheiser MOMENTUM 4 Wireless
Anker Soundcore P31i

Pauses playback when you remove an earbud.

Find my device ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
Anker Soundcore P31i

Locate the earbuds if you misplace them.

Battery

Battery life (earbuds) ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
10 h

Listening time on a single charge.

Battery life (with case) ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
50 h

Total listening time including the charging case.

Battery life (ANC on) ?
60 h
8 h

Listening time with active noise cancellation enabled.

Wireless charging case ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
Anker Soundcore P31i

The case can be charged wirelessly.

USB-C charging ?
Sennheiser MOMENTUM 4 Wireless
Anker Soundcore P31i

The case charges over a standard USB-C cable.

Fast charging ?
Sennheiser MOMENTUM 4 Wireless
Anker Soundcore P31i

A short charge gives hours of playback.

Charging time ?
120 min
? Unknown (Anker Soundcore P31i)

How long a full charge of the case takes; lower is better.

Connectivity

Bluetooth version ?
5.2
6.1

A newer Bluetooth version improves range and efficiency.

Multipoint pairing ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
Anker Soundcore P31i

Stay connected to two devices at once.

Microphones ?
4
6

More microphones improve call clarity and noise cancelling.

Low-latency mode ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
Anker Soundcore P31i

Reduces audio lag for gaming and video.

Wired connection option ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
Anker Soundcore P31i

Can also be used with a cable when needed.

Comfort

Type ?
Over-ear
In-ear

The wearing style of the headphones.

Weight ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
? Unknown (Anker Soundcore P31i)

Lighter earbuds are more comfortable for long sessions.

Water resistance ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
IP55

The IP rating against sweat and water.

Foldable ?
Sennheiser MOMENTUM 4 Wireless
Anker Soundcore P31i

Folds down to pack away more easily.

Colors ?
? Unknown (Sennheiser MOMENTUM 4 Wireless)
Black, White

The colour options the headphones are sold in.

About this data

  • Specifications are compiled from each manufacturer’s official spec sheet, cross-checked against trusted specification databases, and normalised into one schema so identical things are compared identically.
  • Specifications last verified July 11, 2026.
  • Data completeness: Sennheiser MOMENTUM 4 Wireless 64% and Anker Soundcore P31i 92% of the 36 specs in this category. Anything we could not verify is shown as Unknown — never estimated — and is excluded from all scores.
  • Prices and availability come from live retailer feeds via our shopping partners and refresh throughout the day; a missing price means no partner currently lists the product, not that it is discontinued.
  • Want the full picture? Our editorial guidelines explain how we research products, weight the scores and stay independent.
  • Spotted an error in a spec? Tell us and we will correct the sheet.

Where to buy

Prices and availability may change. Check the retailer before buying. We may earn a commission on purchases.

What reviewers say

The bottom line

The Sennheiser MOMENTUM 4 Wireless comes out ahead, scoring 81 to 74 on our VS Score. It leads on Sound quality, Features and Battery. The Anker Soundcore P31i answers back with stronger Connectivity. Pick the Sennheiser MOMENTUM 4 Wireless unless Connectivity matters most to you — then the Anker Soundcore P31i is the smarter buy.

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