Comparison guide
Sennheiser Momentum True Wireless 4 vs Bose Ultra Open Earbuds: which should you choose?
Sennheiser Momentum True Wireless 4 and Bose Ultra Open Earbuds compared under one framework. Decision axes: sound, noise control, fit, call quality, battery life, and device integration. Includes price context and category-specific tradeoffs.
Published: 2026-08-16
Earbuds verdict
Keeping the current product is reasonable. The products share a category but prioritize different strengths. The figures below use the same weighting model and stored representative configurations; confirm the configuration and price on the merchant page before buying.
- Sennheiser Momentum True Wireless 4: Wireless for audiophiles — aptX Lossless and a 7mm TrueResponse driver keep every detail alive.
- Bose Ultra Open Earbuds: An ear-clip that leaves your ears open — hear your surroundings during workouts and outdoors with Bose sound.
- Upgrade recommendation: 33 / 100
- Data completeness: 100%
Choosing between Sennheiser Momentum True Wireless 4 and Bose Ultra Open Earbuds starts with the real use case and the problem to solve, not with which product is newer. Use context: the longest listening block across commuting, workouts, calls, and focused listening. Decision axes: sound, noise control, fit, call quality, battery life, and device integration. This guide applies one calculation model to stored representative configurations while keeping the category-specific decision order visible.
Core specifications on one baseline
| Item | Sennheiser Momentum True Wireless 4 | Bose Ultra Open Earbuds | Delta |
|---|---|---|---|
| Sound | 96 score | 84 score | -12.5% |
| Noise cancelling | 88 score | 40 score | -54.5% |
| Battery | 86 score | 76 score | -11.6% |
| Comfort | 84 score | 92 score | +9.5% |
| Microphone | 82 score | 80 score | -2.4% |
| Ecosystem | 72 score | 70 score | -2.8% |
| Value | 78 score | 72 score | -7.7% |
| battery_h_bud | 7.5 h | 7.5 h | Same |
| battery_h_total | 30 h | 27 h | -10% |
| driver_mm | 7 mm | 12 mm | +71.4% |
| weight_g | 6.2 g | 6.4 g | +3.2% |
| ANC type | Adaptive hybrid ANC | Open-ear (no ANC) | Different |
| Chipset | Qualcomm S5 Sound Gen 2 | Bose audio SoC | Different |
| Codecs | aptX Lossless, aptX Adaptive, AAC, SBC | aptX Adaptive, AAC, SBC | Different |
| Color | Graphite | Black | Different |
| Connectivity | Bluetooth 5.4, aptX Lossless, aptX Adaptive, AAC, SBC, LE Audio | Bluetooth 5.3, aptX Adaptive, AAC, SBC | Different |
| Lineup | Momentum | QuietComfort | Different |
| Region | GLOBAL | GLOBAL | Same |
| Water resistance | IP54 | IPX4 | Different |
Sound
The sound score is 96.0 for Sennheiser Momentum True Wireless 4 and 84.0 for Bose Ultra Open Earbuds. Sennheiser Momentum True Wireless 4 leads this dimension. It is a relative index combining tonal balance, detail, codecs, and device-specific tuning on one baseline. Read the underlying specification rows, source completeness, and exact selling configuration before treating the lead as decisive. Similar averages can hide different weak points, so a small point gap matters less than whether the product removes a concrete problem under your normal usage conditions.
Noise cancelling
The noise cancelling score is 88.0 for Sennheiser Momentum True Wireless 4 and 40.0 for Bose Ultra Open Earbuds. Sennheiser Momentum True Wireless 4 leads this dimension. It is a relative index combining low-frequency isolation, wind handling, and transparency quality on one baseline. Read the underlying specification rows, source completeness, and exact selling configuration before treating the lead as decisive. Similar averages can hide different weak points, so a small point gap matters less than whether the product removes a concrete problem under your normal usage conditions.
Battery
The battery score is 86.0 for Sennheiser Momentum True Wireless 4 and 76.0 for Bose Ultra Open Earbuds. Sennheiser Momentum True Wireless 4 leads this dimension. It is a relative index combining single-charge bud life and total life with the case on one baseline. Read the underlying specification rows, source completeness, and exact selling configuration before treating the lead as decisive. Similar averages can hide different weak points, so a small point gap matters less than whether the product removes a concrete problem under your normal usage conditions.
Comfort
The comfort score is 84.0 for Sennheiser Momentum True Wireless 4 and 92.0 for Bose Ultra Open Earbuds. Bose Ultra Open Earbuds leads this dimension. It is a relative index combining weight, pressure, seal, and long-session stability on one baseline. Read the underlying specification rows, source completeness, and exact selling configuration before treating the lead as decisive. Similar averages can hide different weak points, so a small point gap matters less than whether the product removes a concrete problem under your normal usage conditions.
Microphone
The microphone score is 82.0 for Sennheiser Momentum True Wireless 4 and 80.0 for Bose Ultra Open Earbuds. Sennheiser Momentum True Wireless 4 leads this dimension. It is a relative index combining indoor and outdoor call clarity and background-noise suppression on one baseline. Read the underlying specification rows, source completeness, and exact selling configuration before treating the lead as decisive. Similar averages can hide different weak points, so a small point gap matters less than whether the product removes a concrete problem under your normal usage conditions.
Ecosystem
The ecosystem score is 72.0 for Sennheiser Momentum True Wireless 4 and 70.0 for Bose Ultra Open Earbuds. Sennheiser Momentum True Wireless 4 leads this dimension. It is a relative index combining fast switching, spatial audio, device finding, and platform-exclusive features on one baseline. Read the underlying specification rows, source completeness, and exact selling configuration before treating the lead as decisive. Similar averages can hide different weak points, so a small point gap matters less than whether the product removes a concrete problem under your normal usage conditions.
Value
The value score is 78.0 for Sennheiser Momentum True Wireless 4 and 72.0 for Bose Ultra Open Earbuds. Sennheiser Momentum True Wireless 4 leads this dimension. It is a relative index combining sound, ANC, battery life, and warranty relative to the current price on one baseline. Read the underlying specification rows, source completeness, and exact selling configuration before treating the lead as decisive. Similar averages can hide different weak points, so a small point gap matters less than whether the product removes a concrete problem under your normal usage conditions.
Who should choose Sennheiser Momentum True Wireless 4
Sennheiser Momentum True Wireless 4 is the stronger fit when its leading dimensions match your primary use. Configuration checks: earbud fit, ANC mode, supported codecs, bud and case battery life, and water resistance. Then ask whether the product removes a concrete problem with the device you already own. If the gap is small and there is no real pain point, waiting for a price drop or a change in workload can be more rational than upgrading for novelty alone.
Who should choose Bose Ultra Open Earbuds
Bose Ultra Open Earbuds is the better fit when more of its strengths overlap your priorities and its weaker dimensions remain acceptable. Switching costs: ear tips, charging standard, multipoint behavior, spatial audio, and device-exclusive features. A higher total can still deliver lower practical value when that burden is large, so compare the score lead and switching cost on the same baseline.
How to read price and purchase availability
Neither product currently has an approved purchase link whose product name and configuration match the catalog, so no merchant link is shown. AsKrs does not guess a destination; this guide provides specifications and decision criteria until an exact listing is verified.
- Sennheiser Momentum True Wireless 4 · No verified purchase link currently available
- Bose Ultra Open Earbuds · No verified purchase link currently available
Final decision checklist
- Use context: the longest listening block across commuting, workouts, calls, and focused listening.
- Configuration checks: earbud fit, ANC mode, supported codecs, bud and case battery life, and water resistance.
- Switching costs: ear tips, charging standard, multipoint behavior, spatial audio, and device-exclusive features.
- When the score gap is small, identify the concrete problem the change will solve.
- Recheck the seller, delivery, return terms, condition, and current price at checkout.
Scope and limits of this comparison
This comparison is a structured decision aid built from published specifications and stored representative configurations. Scope and limits: ear-shape-dependent seal, long-session pressure, source-dependent tuning, and call-site noise. The scores are relative indicators for setting priorities within one category, not an absolute quality ranking. When a new configuration or verified specification becomes available, the catalog and its comparison pages are regenerated together.
Open the full configuration-level comparison and upgrade score