Sennheiser Accentum True Wireless In‑Ear (Blue)

Hear the Sennheiser signature—anywhere, all day, without compromise

When you slip in the Accentum True Wireless, you’re stepping into Sennheiser’s unmistakable sound in a design shaped to disappear. These earbuds tackle the real pain points audiophiles face on the go: flaky Bluetooth, fatiguing fits, muddy bass, weak mics, and short battery life. Expect stable multipoint connectivity, a secure, ergonomic seal, clear two‑mic call pickup per earbud, and adaptive noise control that lets your music shine—or your surroundings in—whenever you choose.

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Why Audiophiles Choose This Product

• • Sound, tuned for engagement: Sennheiser’s 7 mm TrueResponse drivers deliver full‑bandwidth detail with engaging bass, natural mids, and crisp treble; fine‑tune with a 5‑band EQ in the Smart Control app. Several reviewers characterize the default voicing as warm‑leaning yet adjustable.
• • Engineered core: Proprietary TrueResponse transducers are built in‑house (Tullamore) for low distortion and consistency across the line—tech heritage normally reserved for Sennheiser’s higher series.
• • Practical, all‑day comfort: An award‑winning ergonomic shell based on thousands of ear scans reduces pressure points for long sessions; IP54 helps shrug off sweat, dust, and drizzle.
• • Seamless everyday compatibility: Bluetooth 5.3 with SBC, AAC, aptX, and LC3, plus reliable multipoint for two devices at once. LE Audio and Auracast are supported via firmware to tap into next‑gen broadcasts.
• • A smarter travel companion: Hybrid Adaptive ANC cuts low‑ and mid‑band noise; Transparency lets conversations through instantly. Quick‑charge over USB‑C (10 minutes ≈ 1 hour), or rest the case on any Qi pad.

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What’s Included

• • Main product: Sennheiser Accentum True Wireless earbuds, Blue (Model no. 700264), with 7 mm TrueResponse drivers and Hybrid Adaptive ANC.
• • Charging case: Pocketable case with USB‑C and Qi wireless charging.
• • Ear tips: Four sizes (XS/S/M/L) for an accurate seal.
• • Cable: USB‑A to USB‑C charging cable.
• • Documentation: Quick guide, safety/warranty information (2‑year international warranty varies by region).

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Technical Specifications

Specification	Value	Notes
Product Type	True wireless Bluetooth in‑ear earbuds	With Hybrid Adaptive ANC and Transparency
Drivers	7 mm TrueResponse dynamic	In‑house Sennheiser transducer, low distortion
Frequency Response	5 Hz – 21 kHz	Full‑bandwidth spec for modern sources
Bluetooth	5.3; profiles A2DP, AVRCP, HFP, TMAP, PBP	Stable connection; wide device support
Codecs	SBC, AAC, aptX, LC3	LE Audio/Auracast via firmware
Multipoint	Yes (two devices)	Smooth auto‑switching between sources
Battery (earbuds)	Up to 8 hours	Usage and features may affect runtime
Battery (total)	Up to 28 hours with case	Case provides ~20 additional hours
Quick Charge	~10 minutes ≈ ~1 hour playback	Over USB‑C
Charging	USB‑C and Qi wireless	Flexible top‑ups at home or travel
Microphones	2 per earbud (beamforming), 4 total	Clear calls; better noise rejection
ANC	Hybrid Adaptive ANC	With Anti‑Wind mode in app
Water/Dust Resistance	IP54	For workouts and commutes
Weight	~5.5 g (earbud), ~41 g (case)	Comfortable for extended listening

Specifications validated from Sennheiser pages and authorized retailers.

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Professional Recognition

• • Awards: Red Dot Design Award winner for Accentum True Wireless—recognized for organic ergonomics that visually communicate comfort.
• • Reviews:
  • “Powerful noise‑cancelling modes… excellent transparency.” — Tom’s Guide.
  • “Great audio quality… strong ANC… good battery life.” — Android Police.
  • “Open, controlled sound… comfortable fit,” though “lacks energy.” — WIRED.
  • “Multipoint works well.” — GSMArena.
• • Heritage: Sennheiser celebrates 80 years of audio in 2025; consumer products are created by Sonova Consumer Hearing under the Sennheiser brand license.
• • Innovation: TrueResponse driver tech and LE Audio/Auracast readiness bring trickle‑down engineering from higher‑tier Sennheiser lines to a compact TWS.

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What it’s like to listen

Out of the box, the Accentum True Wireless leans warm and inviting, with satisfying bass weight and clear, natural mids. If you prefer a crisper, more neutral top end, the 5‑band EQ and Sound Check in Sennheiser’s Smart Control app make it easy to dial in your reference curve. This flexibility lets music‑first listeners keep the musicality while taming bloom—useful across genres from modern hip‑hop to orchestral scores. Reviewers generally highlight very good ANC and connectivity, with differing views on bass consistency and overall “energy,” underscoring the value of a quick EQ pass for best results.

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Everyday usability

• Touch controls are fully customizable in the app—map playback, ANC modes, and voice assistant access to your routine.
• Hybrid ANC handles commute rumble and office chatter; Transparency restores situational awareness instantly. Anti‑Wind mode helps outdoors.
• Multipoint means you can take a call on your phone while staying connected to a laptop or tablet—no re‑pairing dance required.
• The IP54 rating and small, pocketable case with Qi charging make these a go‑anywhere, power‑anytime pair.

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The Bottom Line

Accentum True Wireless in Blue distills Sennheiser’s acoustic know‑how into a comfortable, future‑ready earbud: engaging sound you can personalize, adaptive noise control for real‑world use, rock‑solid multipoint, and 28‑hour endurance with convenient Qi charging. If you want a trustworthy daily driver with the Sennheiser signature and modern LE Audio/Auracast readiness, this is a confident, well‑rounded choice.

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Notes on research and validation:

• Official specs, ergonomics, and app features verified via Sennheiser’s product pages and press materials. Battery life, codecs, and charging confirmed across Sennheiser and authorized retailers (B&H/Thomann). Multipoint, ANC behavior, and sonic character cross‑checked with professional reviews.