Poly Voyager Free 20 vs Sennheiser Momentum TW4 Comparison

Poly Voyager Free 20

Each bud has three noise-cancelling microphones, which Poly aims at your mouth to separate your voice from typing and background chatter. Poly processing suppresses typing and background chatter well. Without a dongle, laptop calls use standard Bluetooth, which narrows the audio when the mic is active. The Voyager Free 60+ includes a USB adapter for steadier PC calls and certification.

Sennheiser Momentum TW4

Each bud has multiple microphones for calls, with processing to reduce wind and background noise. Calls work over standard Bluetooth on phones and laptops. Voice quality is clear in quiet places and acceptable in busier ones, though not a strength compared with business buds. Background noise is reduced, but voices can sound a bit processed in loud spaces.

Poly Voyager Free 20

Adaptive ANC adjusts its strength to the surroundings, and a transparency mode lets you hear colleagues without removing a bud. Poly keeps the controls simple, with a long press switching between the two modes. Cancellation is good in offices and on commutes, reducing air conditioning hum and distant chatter. It is not as strong as premium consumer buds such as the AirPods Pro 3, but enough to help with focus work.

Sennheiser Momentum TW4

Adaptive ANC adjusts to your surroundings, and a transparency mode lets sound in. There is also an anti-wind mode for outdoor use. Cancellation is good on buses and in offices, cutting steady noise well. Against Bose and Sony flagships it lets more mid-frequency sound through, including voices and keyboard chatter.

Poly Voyager Free 20

Poly quotes up to 8 hours with ANC on and 12 hours off, with 28 and 42 hours total with the case. That is enough for a full workday of calls and music without a top-up. Few business earbuds last as long. The case charges by USB-C or on a Qi wireless pad, so a desk charger keeps it topped up without cables.

Sennheiser Momentum TW4

Sennheiser quotes up to 7.5 hours with ANC on and up to 30 hours in total with the case. A quick charge restores about an hour in minutes. That is fine for a working day with mixed listening, though Sony and Poly last a little longer per charge. Lossless streaming draws slightly more power, so expect a little less when using aptX Lossless all day.

Poly Voyager Free 20

The buds are light and shaped for long wear, with several tip sizes and an IP56 rating for dust and water. Many users can wear them through a full workday without discomfort. The shape stays stable when you talk, which matters on long calls. The case is compact and charges wirelessly on a Qi pad, which suits desk setups that already have a wireless charger.

Sennheiser Momentum TW4

The buds are compact with a smooth outer shell, and Sennheiser includes ear tips in four sizes. The water rating is IP54 for dust and splashes. The shape sits fairly flush, so they work while lying back on a headrest, though some find the fit loosens with jaw movement. Touch panels cover much of the outer surface, so adjusting the fit can accidentally pause music.

Poly Voyager Free 20

Bluetooth 5.4 supports multipoint, keeping the buds connected to a phone and a laptop at the same time so you do not need to re-pair between devices. Switching between devices is automatic when a call arrives. Poly Lens app on mobile and desktop handles settings and updates. They are not certified for Teams or Zoom, and no USB dongle is included.

Sennheiser Momentum TW4

Bluetooth 5.4 supports multipoint, Google Fast Pair and Auracast broadcast audio. Auracast lets you join shared audio streams in airports, gyms and venues that support it, without pairing to each transmitter. The Smart Control app handles firmware, EQ and gesture settings, and LE Audio support should improve over time as more phones and laptops adopt the newer standard.

Poly Voyager Free 20

Each bud has a 10 mm speaker, and Poly tunes them for clear voice reproduction. Codec support covers SBC and AAC. For background music while working they are pleasant, but music lovers will prefer consumer-focused buds with richer tuning. The Poly Lens app offers EQ presets that add a little warmth for listening between meetings.

Sennheiser Momentum TW4

Each bud uses Sennheiser's 7 mm TrueResponse dynamic driver, and Snapdragon Sound supports aptX Lossless, aptX Adaptive, AAC, SBC and LC3. The Smart Control app adds EQ and a Sound Check personalisation tool. The Sony WF-1000XM5 is its closest flagship rival. With an iPhone you get AAC, which is still excellent but loses the lossless advantage that Snapdragon phones enjoy.