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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
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Description
Sanag B91S Pro RunPower Open Ear Swimming Bone Conduction HeadphonesFeatures Wrap Around Suspension Design 360 Degree Power Reverb High Density Gravity Sensor Clear Calls with CVC Noise Cancellation Smart Bluetooth 5. 3 IPX8 Waterproof Rating Specifications Model Sanag RunPower B91S Pro Bone Conduction Headphones for Swimming Bluetooth Bluetooth 5. 3 Charging Input DC 5V 170mAh Transmission Distance 10 Meters Working Frequency 20Hz 20KHz Bone Conduction Headphone Size 137*107. 8*47. 2mm Charging Time About 1. 5
Features
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Wrap-Around Suspension Design
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360-Degree Power Reverb
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High-Density Gravity Sensor
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Clear Calls with CVC Noise Cancellation
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Smart Bluetooth 5.3
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IPX8 Waterproof Rating
Specifications
| Model | Sanag RunPower B91S Pro Bone Conduction Headphones for Swimming |
| Bluetooth | Bluetooth 5.3 |
| Charging Input | DC 5V 170mAh |
| Transmission Distance | 10 Meters |
| Working Frequency | 20Hz-20KHz |
| Bone Conduction Headphone Size | 137*107.8*47.2mm |
| Charging Time | About 1.5 hours(Better to charge over 2 hours at first time) |
| Waterproof Level | IPX8 Waterproof |
| Operating Temperature | -20 Dgree to 60 Degree |
| Storage Temperature | -20 Dgree to 60 Degree |
Details
Comfort
Skin-friendly Golden Triangle Ear Wings
The ergonomically crafted golden triangle ear wing design ensures a comfortable fit. With the wrap-around style of the Sanag B91 open-ear bone conduction headphones, worry not about compatibility with different head shapes. The dual design approach guarantees lightweight, secure, and flexible headphone wear.
Aesthetics
180-degree Batwing-shaped Headlights
180-degree batwing-shaped night light beams serve as a safety warning when you venture out at night. Sanag B91 Open-ear bone conduction headphones ensure you can perceive ambient sounds while enjoying music.
Open-air Bone Conduction Listening Experience
Experience music while staying aware of your surroundings with our fully open, non-intrusive headphone design. Keep your ears ventilated and healthy.
Sound Stage
Sound Leakage Reduced by 95%
SSG Acoustic Lab developed the Full-Cavity Closed 5.0 Technology in-house. This technology targets sound leakage caused by driver vibration-induced ear resonance. Enhanced by directional sound transmission, it significantly improves Sanag B91 open-ear bone conduction headphones sound leakage prevention, achieving a 95% boost.
Timbre
Bass Boost Increased by 75%
The open-ear bone conduction headphones feature a 16mm high-density gravity woofer. This enhances bone conduction sound quality by 75%, delivering richer audio and deep bass effects. As a result, the sports experience is greatly improved.
Frequency Response
Sanag Bluetooth Flash Pairing 6.0 Technology
Sanag's exclusive Bluetooth Flash Connect 6.0 technology ensures instant pairing, lightning-fast connection, and zero-buffer latency. This proprietary technology guarantees seamless device connectivity and rapid pairing, providing users with a lag-free audio experience.
Other Benefits
10-hour Long-lasting Single Charge
Sanag B91 headphones are equipped with a large, low-power battery, providing up to 10 hours of continuous use on a single charge. Even if you run two full marathons consecutively, the battery will still be going strong.
Waterproofing at IPX8 Level
Featuring a nano-coated closed-loop body, these earphones achieve IPX8-level waterproofing. With this durable design, they effortlessly withstand rain and sweat during daily use. Moreover, the bone conduction headphones excel in swimming, ensuring versatility across various athletic activities.
High Definition CVC Calls
Equipped with upgraded CVC algorithm, the bone conduction headphones with mic filter surrounding ambient noise in real-time, ensuring clear voices in the ears and delivering high-definition noise-canceling calls.
Offline Storage of Multiple Songs
With onboard memory, the Sanag B91 open-ear headphones store up to 64GB, accommodating thousands of songs. Create your offline music library without needing a phone and enjoy your curated collection on the go.
Smart Sound Tuning via Sanag App
Get the Sanag Smart App for professional EQ tuning and various preset sound effects. Dive into immersive audio and access exclusive VIP sound effects.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Great watch, would recommend
Color: blue watches 58, Color: blue watches 58
I really like this watch because it looks amazing. It’s much lighter than I expected, so it’s comfortable to wear all day at school without feeling heavy. When I first got it, the metal band was a little bit squeaky, but after wearing it for a while, the noise completely
stopped. I had to remove a few links to make it fit my wrist, but the adjustment was actually really easy to do yourself. The clasp is great too it stays closed and it doesn’t pinch my skin at all. The blue and gold colors look awesome together, and it’s definitely a great watch for the price
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Reviewed in the United States on February 14, 2026
★★★★★ 5
My new favorite watch. Simple home improvement needed
Color: all black watch mens, Color: all black watch mens
Despite having many reknown brand watches in my collection, these inexpensive Olevs watches are now my favorite.
They look nice, cost practically nothing and so far are very accurate (10 day review). Little to worry about if lost or damaged.
PROS:
1. Inexpensive $40/each.
2. As stylish as other fashion watches 5x-10x more expensive.
3. Watch Crystal (i.e., glass) has a unique, faceted shape, which reflects light, feels "Manly" and matches faceted bezel.
4. Light weight and slim case; fits small wrists nicely (I have 6.4" wrists).
5. Accurate - two watches tracked over 10 days. Watch one: -7 seconds/10 days. Watch two: +2 seconds/10 days.
6. Illuminescent (i.e., glow-in-the-dark) hands and watch face look decent in dark.
CONS:
7. Lightweight and cheap material - durability is questionable, especially coatings.
8. Bracelet/band links have excessive gaps to each other and rattle badly, making watch noisy and embarrassing. *Home fix*
9. Faceted Crystal can make it difficult to see exact time, because of light reflection.
10. Single clasp on bracelet could easily open inadvertently, vs double clasp.
11. Crown is not threaded and spins freely, even when closed (doesn't change time); likely poor water proofing and crown can easily open.
12. Difficult to set time accurately; crown movement is figity and closing crown can cause hands to easily move.
13. Second hand doesn't exactly line up with tick marks making it difficult to know if actual time is before, or after tick mark.
*AT HOME FIX*:
To fix the noisy bracelet, simply cut to length a piece of waterproof medical tape 15-16mm (5/8") wide, then attach to inside of clean bracelet, while spreading the links apart with your finger (i.e., stretch band). Do this on each bracelet, but don't cover clasp. Tape will need to be replaced, as it gets dirty, but it makes watch quiet.
- Watch dimensions for collectors -
A) Case Diameter (to Crown): 44mm
B) Case Diameter: 42mm
C) Lug-to-Lug length: 50.5mm
D) Case Thickness (Top of Crystal): 12.6mm
E) Strap/Bracelet Width at Case: 20mm
F) Strap/Bracelet Width at Clasp: 18mm
G) Weight 6.4" wrist size: 100g (3.5oz)
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Reviewed in the United States on May 12, 2025
★★★★★ 4
It's a watch
Color: blue watch for men
Not a bad watch. Cheap, looks good and works.
Take it to your local jeweler and they can pop the links out in no time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
Nice But Overpaid
Color: Black Embossed
Very happy about the purchase. The style is great, size is perfect, and the leather is really nice. When I unpacked it, the MSRP ticket was inside showing the cost of $125, but I paid $150. Not so happy about that part.
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Reviewed in the United States on January 5, 2026
★★★★★ 5
Muy buen producto
Color: Black Embossed
De muy buena calidad!!!
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Reviewed in the United States on December 1, 2025