Poly Voyager Free 60+ vs Sennheiser Momentum TW4 Comparison

Poly Voyager Free 60+

Each bud has three microphones that steer toward your mouth, with WindSmart processing for outdoor calls. Poly also lets you set sidetone to low, medium or high, so you can hear your own voice naturally. Walking along a busy road, I would expect the voice to stay clear with traffic reduced, and WindSmart helps with gusts.

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 60+

Hybrid adaptive ANC uses inner and outer microphones and adjusts for how well the buds fit. A transparency mode lets surrounding sound through when you need it. On a plane or bus the cancellation is respectable for business buds, cutting steady engine noise well. It is weaker against voices and sudden sounds, where Apple and Bose are ahead.

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 60+

Poly lists up to 5.5 hours of talk time per charge, or 16.5 hours with the case. With ANC on, music runs up to 8 hours, or 24 hours in total. A 15-minute charge gives about 1 hour 12 minutes of talk time, and standby lasts up to 30 days including the case.

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 60+

Each bud weighs 5.8 g and measures about 16 x 26 x 38 mm, with a short stem. Poly includes S, M and L ear tips and a pressure-relief design. The shape takes some experimenting before it sits securely, and smaller ears may feel the stem touching. Once settled they are fine for a long afternoon of calls, though not as invisible as stem-free designs.

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. Most ears find them comfortable for a few hours. The shape sits fairly flush, so they work while lying back on a headrest, though some find the fit loosens with jaw movement.

Poly Voyager Free 60+

The buds use Bluetooth 5.3 with multipoint to two devices and remember up to eight. The BT700 adapter extends range to about 30 m and supports Microsoft Swift Pair on Windows. The touchscreen case shows battery, mute state and volume, and lets you switch between the two active devices. Plug the included cable into a seatback socket, and the case streams that audio to the buds at up to about 3 m.

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 60+

Each bud has a 10 mm speaker, larger than most business earbuds use. Poly applies a dynamic EQ that switches between wideband voice, up to 7 kHz on PC calls, and a full 20 Hz to 20 kHz media mode. In media mode they have more bass punch than the Jabra Evolve2 Buds, and music sounds fuller.

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 result is the most refined sound in this group. Instruments separate clearly, vocals sound natural and the bass is deep without blooming.