Наушники — Sennheiser Accentum Open

The Accentum Open is a set of true wireless earbuds from Sennheiser with an open-ear stem design that sits in the concha rather than sealing the ear canal. The US list price is USD 129.95. Pairing is handled without a mandatory app, and the earbuds carry no active noise cancelling, which fits the open concept of letting surrounding sound through. Colour options include black and cream.

Key specs that matter

An 11 mm dynamic transducer drives each side. Sennheiser gives a frequency range of 25 Hz to 15 kHz at 90 dB SPL, a sound pressure level of 109 dB at 1 kHz and 1 mW, and total harmonic distortion below 0.08 percent at 1 kHz and 94 dB. The Bluetooth 5.3 link is class 1 with a maximum of 10 mW and supports the A2DP, AVRCP and HFP profiles, with SBC and AAC as the audio codecs. One earbud weighs 4.35 g, and the full set with its case weighs 38 g. The case with the buds inside measures 51.77 x 50.18 x 25.36 mm, and the whole kit carries an IPX4 rating against splashes.

Engineering and use context

Playback lasts up to 6 hours per charge in the earbuds, while the compact charging case stores enough energy for a combined total of about 28 hours. The cells are rated at 36 mAh and 35 mAh in the two earbuds and 400 mAh in the case. A full charge takes around one hour through USB-C, while a 10 minute top-up gives roughly one hour of listening. For calls, each earbud has two MEMS microphones working as a beamforming array to cut background noise, with a microphone pickup range of 100 Hz to 10 kHz. Touch surfaces on the stems handle playback and call control, and smart pause stops the music when an earbud is taken out. Because the in-concha shape leaves the ear canal open, the wearer keeps hearing traffic and voices around them, which suits running, cycling or office use where isolation is unwanted.

Pairing

Multipoint support stores up to eight source devices in memory, so a phone, tablet and laptop can all be paired without repeating the setup each time. Since the codec list stops at AAC, Apple phones and tablets get the best supported format, while Android handsets use AAC or SBC. No external DAC or headphone amplifier is involved, as the conversion and amplification sit inside each earbud.

Alternatives

The Sennheiser Accentum Clip is another open-ear true wireless model from the brand, adding LDAC, Bluetooth 6.0 and up to 36 hours of battery life with its case.