Huawei Seiya-B09F Watch FIT 4 smartwatch: Slimmed-down Design for Comfort
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Meet the HUAWEI Watch FIT 4 – where style meets smarts. It's got this 1.82" large display that's easy on the eyes, and get this: it's so light and slim (just 27 g and 9.5 mm thick) you'll forget you're wearing it. Plus, that 3D wing-like design? Comfort city, whether you're crushing deadlines or crushing your workout.
Battery life? Oh, it's a beast – up to 10 days on a single charge. And if you're in a pinch, just 10 minutes plugged into the 2nd-gen Wireless SuperCharger gets you through the day. Works like a charm with both iOS and Android, so no matter your phone allegiance, you're covered. Notifications, fitness tracking – it's all there, no fuss.
Here's the kicker: it's like having a health coach on your wrist. The HUAWEI Health Insights app dishes out personalized advice on everything from stress to sleep (because who doesn't need more of that?). And with the advanced Sunflower Positioning System, it's got your back (or wrist) for pinpoint accuracy, whether you're walking, running, cycling, or pretending you're on a hike (we won't judge).
- Up to 10-day Battery Life
- Broadly Compatible
- Wrist-based Health Insights
- Precise Positioning
- Slimmed-down Design for Comfort
General specs
- Brand: Huawei
- Model: Seiya-B09F
- Seller: Amazon
- product_dimensions: 1.57 x 1.18 x 0.31 inches
- item_weight: 27 Grams
- batteries: 1 A batteries required. (included)
- standing_screen_display_size: 1.82 Inches
- memory_storage_capacity: 4 GB
- connectivity: NFC Supported, Bluetooth 2.4 GHz, supports BT5.2 and BR + BLE, GNSS L1: GPS + GLONASS + GALILEO + BDS + QZSS, L5: GPS + GALILEO + BDS +QZSS
- First listed by seller: 6/7/25
If you are interested in more details, you can find full information on the seller's page.
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United States
Video Reviews
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Huawei Seiya-B09F Slimmed-down Design for Comfort
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Huawei Seiya-B09F Slimmed-down Design for Comfort
|
Huawei Watch Fit Elegant Global Version
|
Huawei Watch Fit (Active) Global Version
|
Huawei HUAWEI Band 8 Ultra-thin and lightweight design
|
Huawei WATCH FIT Fitness tracking
|
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| Brand | Huawei | Huawei | Huawei | Huawei | Huawei | Huawei |
| Model | Seiya-B09F | Seiya-B09F | Watch Fit Elegant | Watch Fit (Active) | HUAWEI Band 8 | WATCH FIT |
| Color | ||||||
| Rating |
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| Price | $189.89 | $175.88 | $74.99 | $66.99 | $45.90 | $118.00 |
| Seller | Amazon | Amazon | Gshopper | Gshopper | Amazon | Gshopper |
| Update | June 27, 2025 | July 20, 2025 | July 25, 2024 | July 25, 2024 | June 27, 2025 | September 14, 2025 |
| item_weight | 27 Grams | 27 Grams | 3.98 ounces | |||
| batteries | 1 A batteries required. (included) | 1 A batteries required. (included) | 1 Nonstandard Battery batteries required. (included) | |||
| standing_screen_display_size | 1.82 Inches | 1.82 Inches | 1.47 Inches | |||
| memory_storage_capacity | 4 GB | 4 GB | 512 MB | |||
| Battery Life | Long Battery Life | Long-lasting | Long | |||
Watch FIT 4 smartwatch
Sofia M.
New York, NY
June 18, 2025
As an engineer, I'm always critical about tech, and this watch is a solid choice overall. Q: Does it live up to the hype? A: Mostly yes—it's stylish and functional, but not flawless. The comfort is top-notch, and I appreciate the cross-platform compatibility. However, the health features, while advanced, can be hit or miss in accuracy. It's great for tracking my daily activity and sleep, but I've noticed some inconsistencies. For the price, it's a good value, but I'd recommend it with some reservations. If you're a pragmatist like me, you'll find it useful but might want to wait for improvements in future models. 😊
- Pros: I love how light and thin this watch is—it's barely noticeable on my wrist, which is perfect for all-day wear. The battery lasts forever, and a quick charge gets me through a busy day. It pairs easily with my phone, no matter the brand, and the display is clear and easy to read. The health insights feel personalized and helpful, almost like having a coach with me.
- Cons: The design seems a bit too flashy for my taste, and I wish the strap options were more understated. Sometimes the notifications can be overwhelming, and the app feels clunky at times—manuals are useless for figuring it out. The accuracy isn't always perfect, especially during intense workouts.