Wireless Earbuds
Sennheiser MOMENTUM True Wireless 4
8.5/10SoundGuys scoreRead our review ›
1 of 2 would buy again
2 owners
The battery beat their expectations
Comfort beat their expectations
$299.95at Amazon
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1 / 8SHOKZ
SHOKZ OpenFit 2
Noise Isolation & sound
3/ 10
3
0.010.0
A 3 puts its noise isolation in the bottom quarter of wireless earbuds we've measured.
Measured on 130 of the 252 we've cataloged.
2/ 5
SoundMDAQS Overall2
1.05.0
A 2 puts its audio quality in the bottom 10% of wireless earbuds we've measured.
Measured on 64 of the 252 we've cataloged.
See the lab data ↓Frequency response · Isolation · Audio quality
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Key specs
Battery Life Earbuds
11 hAbove average11 h
2 h15 h
above average for wireless earbuds — based on 236 of 252 we've cataloged.
Battery Life With Case
48 hAbove average48 h
7 h60 h
above average for wireless earbuds — based on 235 of 252 we've cataloged.
IP Rating
IP55IPX436%IP5517%IP5415%IPX510%
IP55 appears on 17% of the 232 wireless earbuds we've cataloged (of 252).
Battery
- Battery Life Earbuds
- 11 h
- Battery Life With Case
- 48 h
- Charging Method
- USB-C
- Full Charge Minutes
- 5 min
- Fast Charging
- Yes
Build
- IP Rating
- IP55
- Sweat Resistance
- Yes
- Water Resistance
- Yes
- Material Chassis Primary
- Silicone, titanium alloy
Connectivity
- Bluetooth Version
- 5.4
- Bluetooth Range
- 10 m
- Connection Type
- Bluetooth
- Headphone Jack
- No
- Multipoint Devices
- 2 devices
Design
- Earbud Form Factor
- Open-ear
- Case Dimensions
- 152×76×23 mm
- Color Options
- Beige, black
- Ear Tip Material
- Silicone
- Wearing Style
- Ear hook
- Weight Per Earbud
- 9.4 g
- Weight With Case
- 72 g
Features
- Companion App
- IOS + Android
- Control Type
- Physical buttons, touch controls
- Eq Customization
- Presets only
- Auto Pause
- Yes
- Mono Mode
- Yes
- Music Storage
- No
- Spatial Audio
- Fixed
- Voice Assistant Support
- Audrey
Identity
- Model Number
- SHOKZ T921
Microphone
- Count
- 4
- Microphone
- Yes
- Wind Noise Reduction
- Yes
- Noise Reduction Type
- AI-powered
- Type
- Quad microphone
Release
- Date
- 2024-11-21
- Msrp Usd
- 179.95 USD
- Year
- 2024
Sound
- Ambient Mode
- Standard
- Anc Modes
- Off
- Driver Count
- 2
- Driver Size
- 17.3 mm
- Driver Type
- Hybrid
- Impedance
- 19 Ω
- Transducer Type
- Air conduction (open-ear)
Lab data
How we test ›Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.
SHOKZ OpenFit 2 Frequency Response (measured on a B&K 5128)
Click a line or a legend entry to highlight it. Click again to clear.Tap a legend entry to highlight its line. Tap again to clear.
Measured frequency response (dB relative) against the SoundGuys Headphone Preference Curve. When the measurement goes above the dashed line, that frequency is louder than our preference curve, and when it goes below: it's quieter. Use the curve for comparison purposes only, as your taste may vary.
| Frequency (Hz) | Response (dB) |
|---|---|
| 20 | -36.2 |
| 25 | -45.5 |
| 32 | -39.2 |
| 40 | -27.1 |
| 50 | -15.1 |
| 63 | -5.7 |
| 80 | -1.5 |
| 100 | -2.1 |
| 125 | -1.9 |
| 160 | -1.0 |
| 200 | -2.1 |
| 250 | -2.5 |
| 315 | -2.0 |
| 400 | -0.9 |
| 500 | 0.1 |
| 630 | 0.8 |
| 800 | 0.9 |
| 1000 | 0.9 |
| 1250 | 1.2 |
| 1600 | 2.9 |
| 2000 | 5.5 |
| 2500 | 7.5 |
| 3150 | 2.7 |
| 4000 | 6.5 |
| 5000 | 6.2 |
| 6300 | 0.7 |
| 8000 | -3.7 |
| 10000 | -5.6 |
| 12500 | -5.9 |
| 16000 | -11.2 |
| 20000 | -23.4 |
SHOKZ OpenFit 2 Attenuation (measured on a B&K 5128)
Click a line or a legend entry to highlight it. Click again to clear.Tap a legend entry to highlight its line. Tap again to clear.
Solid lines: passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Higher on the chart means more attenuation.
| Frequency (Hz) | Attenuation (dB) |
|---|---|
| 21 | 2.4 |
| 26 | -0.1 |
| 33 | 0.1 |
| 41 | 0.1 |
| 52 | 0.0 |
| 65 | 0.0 |
| 82 | 0.0 |
| 103 | 0.0 |
| 130 | -0.0 |
| 163 | -0.0 |
| 205 | -0.0 |
| 259 | -0.1 |
| 325 | -0.1 |
| 410 | -0.1 |
| 516 | -0.1 |
| 613 | -0.2 |
| 772 | -0.3 |
| 972 | -0.4 |
| 1220 | -0.2 |
| 1540 | -1.0 |
| 1940 | -1.6 |
| 2440 | -2.3 |
| 3070 | -0.1 |
| 3870 | 3.8 |
| 4870 | 4.7 |
| 6130 | 1.3 |
| 7720 | 3.1 |
| 9720 | 5.0 |
| 12200 | -3.2 |
| 15400 | 1.4 |
| 19400 | 5.9 |
SHOKZ OpenFit 2 MDAQS
Multi-Dimensional Audio Quality Scores, Scale 1 - 5
Mean opinion score
2.1
3.0
2.4
2.0
TimbreDistortionImmersivenessOverall
Virtual mean opinion scores (MOS) on a 1–5 scale, modeled from the measured response by HEAD acoustics’ MDAQS (Multi-Dimensional Audio Quality Score) model. Higher is better across timbre, distortion, and immersiveness — add other models to see where this one lands.
SoundGuys review
Isolation3.0
Battery life7.5
Comfort & fit8.0
Connectivity5.5
Design6.5
Portability9.0
The verdict
The Shokz OpenFit 2 brings meaningful improvements over its predecessor with better comfort, superior controls, and marathon-worthy battery life. While they still can't match the audio quality of sealed earbuds, they're an excellent choice for athletes and outdoor enthusiasts.
✓Liked: Comfortable, Physical controls, Long battery, Customizable EQ with presets
✕Could be better: No wear detection, Sound leakage, Non-waterproof case, No Find My feature
Owners
How we verify ownersNobody who owns the SHOKZ OpenFit 2 has written in yet.
Owner reviews are not paid for, not solicited from specific owners, and not rewritten by us: at most we proofread typos, which is shown on the review’s own page and which the author can undo. The commission SoundGuys may earn on this page comes from retail links, never from owner reviews.
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Questions from readers
What readers ask about the SHOKZ OpenFit 2, answered by the people who own it.
Nobody has asked the owners yet.
Ask the first question →Video reviews and comparisons for this product.
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