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Sennheiser Accentum Open

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Sennheiser Accentum Open
Connection and design
Designinserts
Connection typewireless
ConnectionBluetooth v5.3
Range10 m
Specs
Frequency range25 – 15000 Hz
Sensitivity109 dB
Speaker size11 mm
Emitter typedynamic
Harmonic distortion coefficient< 0,08 %
Microphone specs
Microphonebuilt into the case
Number of microphones2 pcs in each earphone
Frequency range100 – 10000 Hz
Features
Mobile app / Sennheiser Smart Control /
Volume control
Codec supportAAC
Power supply
Power sourcebattery
Headphone battery capacity35 mAh
Case battery capacity400 mAh
Operating time (music)6 h
Operating time (with case)24 h
Fast charge10 minutes for 1 hour of work
Wireless charger
Charging portUSB-C
General
Touch control
WaterproofIPX4
Weight4 g
In boxcharging case
Official Websitesennheiser-hearing.com
Added to E-CatalogMay 2025
P/N
700430

700446

Sennheiser Smart Control app for convenient smartphone connectivity.

The 2025 Accentum lineup debut is among the most affordable TWS earbuds from the specialist brand Sennheiser. The model is in an open-fit form factor, has an IPX4 water-resistant housing, a clean, minimal design (available in beige or black), and a lightweight (4 g) build. It uses 11 mm dynamic drivers that support an extended frequency range of 25 to 15,000 Hz and feature minimal harmonic distortion (up to 0.08%), contributing to clean sound that stays as close as possible to the creator’s intent.

The Sennheiser Accentum Open connect via Bluetooth v5.3 and operate at distances up to 10 meters, and they are equipped with a microphone, which makes them suitable for calls and other voice communication scenarios. You can adjust volume directly by touch (touch controls supported), and additional sound settings are available in the Smart Control app. Battery life is about 6 hours without the case and up to 24 hours with it. You can charge the case not only via USB-C but also wirelessly. Also note fast charging: a 10-minute cycle gives another 1 hour of music listening.

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
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