Sennheiser Accentum Open Accentum Open True Wireless Open-Ear Review

The Sennheiser Accentum Open offers open-ear awareness at $100, but our data shows significant compromises in sound, calls, and battery make it a niche pick.

Form Factor open-ear
Wireless Yes
Water Resistance IPX4
Multipoint Yes
Sennheiser Accentum Open Accentum Open True Wireless Open-Ear earbuds
35.5 Gesamtbewertung

The 30-Second Version

The Sennheiser Accentum Open offers open-ear awareness at a budget $100 price, but performance is mediocre across the board. Sound quality and call quality are particularly weak, and battery life underwhelms. Only consider these if you must have an open design and can't spend more; otherwise, better sealed earbuds exist at similar prices.

Overview

The Sennheiser Accentum Open is a pair of true wireless earbuds that don't try to block out the world. They're open-ear, which means they sit outside your ear canal instead of plugging it up. This design is all about letting you hear your music and your surroundings at the same time, which is great for a walk, a commute, or just staying aware at home. It's a specific choice, and it's not for everyone.

If you've ever felt uncomfortable with the sealed-in feeling of regular earbuds, or if you need to keep an ear open for kids, traffic, or coworkers, this is the niche these buds aim to fill. They're pitched as a tool for traveling and everyday listening where awareness is key. The stem design promises a secure fit, and Sennheiser's name on the box suggests a certain audio pedigree.

What makes them interesting is that they're trying to solve a common problem with a less common solution, and they're doing it at a budget-friendly price point of around $100. That's a lot cheaper than most premium open-ear or bone conduction alternatives. But the question is, can they deliver decent sound and a good experience when they're competing against some of the best sealed earbuds on the market? Let's dig in.

Performance

Our data shows the Accentum Open's performance is squarely middle-of-the-pack, with a few notable weak spots. The sound quality percentile is underwhelming, landing in the 36th percentile. That means most true wireless earbuds we've tested sound better. The 11mm drivers with Sennheiser tuning do provide a listenable experience, but you're not getting the rich, detailed audio you might expect from the brand. Bass will be lighter, and overall clarity falls behind sealed in-ear models.

The real-world implication is simple: you're trading sound quality for situational awareness. The open-ear design inherently leaks sound in and out, so you lose acoustic isolation and the potential for deep, punchy bass. The other performance metrics follow a similar trend. Battery life is disappointing, with a percentile score that puts it near the bottom. The claimed 28 hours with the case seems optimistic compared to real-world usage from similar designs. Connectivity and build quality scores also suggest these are basic, no-frills performers in a competitive field.

Performance Percentiles

Anc 34.5
Mic 23.8
Build 91.2
Sound 79.3
Battery 16.3
Comfort 69.2
Connectivity 67.6
Social Proof 10.3

Pros & Cons

Pros

  • Open-ear design provides excellent situational awareness, perfect for outdoor activities or busy environments. 91th
  • Lightweight (38g total) and non-invasive fit keeps ears cool and comfortable for long periods. 79th
  • IPX4 rating offers basic sweat and water resistance for workouts or light rain. 69th
  • Multipoint connectivity lets you pair with two devices simultaneously, a handy feature for switching between phone and computer. 68th
  • Price is competitive at $100, making it one of the more affordable open-ear true wireless options.

Cons

  • Sound quality is mediocre, ranking well below average compared to most true wireless earbuds. 10th
  • Microphone performance for calls is one of the worst we've seen, with a percentile score in the 'dead last' range. 16th
  • Battery life is a weak spot, with real-world usage likely falling short of the 28-hour claim. 24th
  • No active noise cancellation (ANC), which is standard on many competitors at this price. 35th
  • Build quality and connectivity reliability scores suggest a basic, potentially less durable product.

Specifications

Full Specifications

Design

Form Factor open-ear
Weight 0.0 kg / 0.1 lbs

Audio

Driver Size 11

Connectivity

Wireless Yes
Multipoint Yes

Features

Water Resistance IPX4

Value & Pricing

At $100, the Accentum Open sits in an awkward spot. It's not cheap enough to be a throwaway budget pick, and it's not good enough to compete with the value leaders in the sealed earbud category. For pure price-to-performance, it's a tough sell. You're paying for a specific design feature—open-ear awareness—and accepting significant compromises in sound, battery, and call quality.

Compared to other vendors, $100 can get you excellent sealed earbuds with great ANC and sound from brands like Sony or Anker. If open-ear design is a must-have, the Accentum Open is one of the more affordable ways to get it from a known brand, but you're definitely getting a budget-tier experience within that niche.

137 CA$

vs Competition

The obvious competitors are the best-in-class sealed earbuds. The Sony WF-1000XM5, Technics EAH-AZ80, and Bose QuietComfort Ultra all cost more, but they deliver best-in-class sound, top-tier ANC, and excellent call quality. If you don't need open-ear design, spending even $50 more on a sale for one of these is a dramatically better audio experience. The trade-off is total isolation versus total awareness.

For a more direct comparison, look at other open-ear or bone conduction headphones like Shokz OpenFit or older Bose Sport Open Earbuds. These often cost more ($150-$200) but may offer better sound or fit from the open-ear concept. The Accentum Open's value is its lower price, but our data suggests you're getting lower performance too. Apple AirPods Pro are another benchmark; they offer a great blend of sound, ANC, and transparency mode that mimics open-ear awareness, but again, at a higher price.

Spec Sennheiser Accentum Open Accentum Open True Wireless Open-Ear Bose QuietComfort Ultra Earbuds Bose QuietComfort Ultra True Wireless Technics EAH-AZ80 Technics EAH-AZ80 Noise-Canceling True Wireless Apple AirPods Apple - AirPods 4 with Active Noise Cancellation - Soundcore Liberty Soundcore by Anker Liberty 5 True Wireless JBL Tune JBL - Tune Buds 2 True Wireless Noise Cancelling
Form Factor open-ear In-Ear In-Ear in-ear In-Ear in-ear
Driver Type - Dynamic Dynamic Dynamic Dynamic Dynamic
Wireless true true true true true true
Active Noise Cancellation - true true true true true
Bluetooth Version - 5.3 5.3 5.3 5.4 5.3
Battery Life Hours - 6 7 5 8 10
Case Battery Hours - 18 16 25 24 30
Water Resistance IPX4 IPX4 IPX4 Water-Resistant IP55 Water-Resistant
Multipoint true true true true true true
Compare Compare Compare Compare Compare
Product AncMicBuildSoundBatteryComfortConnectivitySocial Proof
Sennheiser Accentum Open Accentum Open True Wireless Open-Ear 34.523.891.279.316.369.267.610.3
Bose QuietComfort Ultra Earbuds QuietComfort Ultra True Wireless Noise-Canceling Earbuds 2nd Gen Compare 96.187.891.299.269.693.298.593
Technics EAH-AZ80 Noise-Canceling True Wireless In-Ear Compare 82.699.991.298.469.693.298.593
Apple AirPods Noise-Canceling Compare 96.187.881.492.191.593.297.798.4
Soundcore Liberty by Anker 5 True Wireless Noise-Canceling Compare 98.798.995.995.493.893.298.599.6
JBL Tune Tune Buds 2 True Wireless Noise Cancelling Earbuds 2025 Compare 96.195.381.493.891.193.295.893

Common Questions

Q: How good is the sound quality compared to regular earbuds?

The sound quality is underwhelming, ranking in the 36th percentile. That means most true wireless earbuds sound better. The open-ear design means you lose bass impact and overall clarity, so if you prioritize music quality, regular sealed earbuds are a much better choice.

Q: Can I use these for phone calls?

We strongly advise against it. The microphone performance scores in the bottom 17th percentile, which is one of the worst we've seen. Callers will likely struggle to hear you clearly, especially in noisy environments. These are not good call earbuds.

Q: Is the 28-hour battery life realistic?

Our battery life percentile data suggests it's not. Scoring in the disappointing 14th percentile, real-world usage will likely be less, especially if you use them at higher volumes. You'll probably need to charge the case more often than with leading competitors.

Q: Do they have noise cancellation?

No, they do not have active noise cancellation (ANC). The open-ear design is the opposite of ANC; it lets sound in. If you want to block out noise, you need a completely different type of earbud.

Who Should Skip This

Skip the Accentum Open if you care about sound quality for music. Our data shows it's a mediocre performer, and you'll be disappointed if you're expecting typical Sennheiser audio. Also skip them if you need earbuds for calls; the microphone is terrible. Anyone looking for long battery life or a durable, feature-packed daily driver should look elsewhere.

Instead, if you want great sound and ANC, look at the Sony WF-1000XM5 or even budget champions like the Anker Soundcore Liberty 4 NC. If you need good call quality, the Jabra Evolve2 Buds are designed for that. If you want open-ear awareness but better performance, consider spending more on Shokz OpenFit. The Accentum Open is for a very specific, compromise-tolerant user.

Verdict

If you absolutely need an open-ear design for safety or comfort reasons, and your budget is firmly around $100, the Accentum Open is a viable option. Use them for walks, light workouts, or in situations where you need to hear your environment. Just know you're getting mediocre sound and terrible call quality.

For almost everyone else, we recommend looking elsewhere. If you want good sound for music, get a sealed earbud. If you need good microphone quality for calls, this isn't the product. If battery life is a priority, there are many better choices. The Accentum Open serves a very specific, narrow need and makes significant sacrifices to meet it.