The Sennheiser Accentum True Wireless adopt a fully wireless, in-ear fit with no cables or neckband involved, and wingtips are not included. Each earbud houses a stereo speaker, delivering sound to both ears independently. For durability in active settings, the earbuds carry an IP54 ingress protection rating, which means they are built to handle sweat and minor moisture exposure without issue.
The Accentum True Wireless combine active noise cancellation with passive noise reduction, giving listeners two layers of isolation from surrounding sound. Audio is handled by a 7 mm driver unit with a frequency response spanning 20 Hz to 20,000 Hz, covering the full range of human hearing. The drivers do not use a neodymium magnet in their construction.
The Accentum True Wireless are equipped with a rechargeable battery that provides 8 hours of playback per charge, with the charging case contributing an additional 20 hours for a combined total of 28 hours. A full charge takes 1.5 hours, and the earbuds support wireless charging alongside wired charging. A battery level indicator is also included, so users can keep track of remaining power without guesswork.
The Accentum True Wireless connect wirelessly via Bluetooth 5.3 with a maximum range of 10 m, and the charging case uses USB Type-C for wired power delivery. Supported audio codecs include AAC and aptX, while LDAC, LDHC, aptX Adaptive, aptX HD, aptX Low Latency, aptX Lossless, and aptX Voice are not available. The earbuds do support Bluetooth LE Audio and Auracast, enabling broadcast audio scenarios, though fast pairing and NFC pairing are not featured.
The Accentum True Wireless include a practical set of everyday features, starting with ambient sound mode for controlled awareness of the surrounding environment, along with a mute function and full headset capability for calls. Controls are handled through an on-device panel rather than an in-line control panel, and voice prompts are on hand to guide users through settings and status updates. Fast charging is supported, and a travel bag is included in the box for portability. The earbuds do not offer in/on-ear detection, a find device feature, or a body temperature sensor.
The Accentum True Wireless feature a noise-canceling microphone, which works to reduce unwanted background sound during calls and voice interactions for clearer communication.