Sennheiser Accentum Open

Package contents

In the plastic-free box, you’ll find the Sennheiser Accentum Open earbuds, a pocket-friendly charging case, a USB-A to USB-C charging cable, and a quick-start guide. The Accentum Open come with no ear tips – they simply rest in your ear, providing a light, airy fit without the sealing effect of silicone tips. This means your ear canal stays ventilated and you remain aware of your surroundings.

The downside: if the shape doesn’t suit your ears, the earbuds may fit loosely or even fall out with sudden head movements. On the plus side, the IPX4 splash resistance means they can withstand rain or sweat without issue.

Function and controls

Pairing happens automatically when you remove the Accentum Open from the charging case. Connection is via Bluetooth 5.3, supporting SBC and AAC codecs. The 11 mm drivers handle audio reproduction.

Multipoint allows you to keep two devices connected at once – for example, listening to music from a laptop while taking calls from your phone. To pair an additional device, simply touch and hold both earbuds for three seconds – the only function you might need the manual for. Everything else, as Sennheiser puts it, is straightforward and intuitive.

Touch controls are located on the backs of the earbuds. Play/pause, track skipping, and volume are accessed with taps. Triple-tapping the left earbud toggles the auto-pause function when removing them. You can also answer or end calls from here. That’s it. Sennheiser promotes the lack of app support as a “focus on essentials” – though a built-in EQ or custom gesture mapping would have been a welcome addition.

Sound quality

Out of the box, the Sennheiser Accentum Open deliver a surprisingly punchy sound. Despite their open design, bass is solid, and the overall presentation is well balanced with decent detail retrieval. The treble is a little restrained, meaning the mids sometimes feel a bit too forward, giving a slightly veiled impression. Still, the sound is easy to listen to for long periods, making them ideal for podcasts or background music.

The open, airy fit and natural soundstage are definite strengths, but in noisy environments – such as busy streets or when vacuuming – you may find the music gets lost, as there’s no passive isolation by design.

Battery life and calls

Sennheiser claims six hours of playback per charge, with a total of 28 hours including the case (which does not support wireless charging). A 10-minute quick charge gives up to 1.5 hours of playback.

The dual beamforming microphones ensure your voice is clear and easy to understand for callers. AI noise suppression keeps your voice clean even in noisy environments – although in such cases, your own hearing may suffer more than the person on the other end.

Conclusion

The Sennheiser Accentum Open impress with their simplicity, open fit, and solid sound – although they could use a touch more treble sparkle. Without app support, sound adjustments can only be made via your playback device. Fit may also be an issue for some, due to the lack of adjustability. Otherwise, for around €90, you get a capable and comfortable pair of open earbuds from Sennheiser.