Fitbit 6514034 Advanced Health and Fitness Smartwatch: All-day stress detection with cEDA
Let's talk about the Fitbit Sense 2—because calling it just a smartwatch feels like calling a Swiss Army knife just a knife. This little powerhouse is your round-the-clock health guru, stress buster, and fitness coach all rolled into one sleek package. Ever wondered why you're feeling off? Its all-day stress detection (thanks to cEDA tech) and daily Stress Management Score might just have the answers. And with an ECG app that checks for atrial fibrillation, plus alerts for irregular heart rhythms and SpO2 monitoring, it's like having a mini doctor on your wrist.
For the fitness fanatics (or those of us who pretend to be on Mondays), it's got built-in GPS to track your wanderings, a workout intensity map to show off your efforts, and over 40 exercise modes—because variety is the spice of life, right? Oh, and it's swim-proof up to 50 meters, so go ahead, make a splash. Sleep more than just a beauty ritual? The Sense 2 dishes out personalized Sleep Profiles, breaks down your nightly adventures into sleep stages, and even gives you a Sleep Score. Because who doesn't love a good grade?
And because we live in the 21st century, it keeps you connected with Bluetooth calls, texts, and notifications right on your wrist. Fancy a change? Swap out the clock face like you're changing outfits. Fitbit Pay and Amazon Alexa are baked in, because convenience is king. The cherry on top? A battery that lasts over 6 days and a 6-month Premium membership to dive deep into your health analytics. Because knowing is half the battle.
- ECG app for atrial fibrillation assessment
- Personalized Sleep Profile
- Built-in GPS and workout intensity map
- 40+ exercise modes
- 6+ day battery life
- All-day stress detection with cEDA
General specs
- Brand: Fitbit
- Model: 6514034
- Seller: Amazon
- Product Dimensions: 1.57 x 0.47 x 1.57 inches; 7.05 ounces
- Batteries: 1 LR44 batteries required. (included)
- Date First Available: September 23, 2022
- Manufacturer: Fitbit Inc
- Country of Origin: China
- First listed by seller: 5/8/25
If you are interested in more details, you can find full information on the seller's page.
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Fitbit 6514034 All-day stress detection with cEDA
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| Brand | Fitbit | Fitbit | Fitbit | Mindrose | GADIXY | |
| Model | 6514034 | FB521GLBM-US | Sense 2 | |||
| Color | ||||||
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| Price | $219.00 | $229.99 | $220.00 | $49.99 | $34.19 | $49.99 |
| Seller | Amazon | Amazon | Amazon | Gshopper | Amazon | Amazon |
| Update | June 27, 2025 | June 29, 2025 | June 28, 2025 | July 25, 2024 | July 18, 2025 | June 27, 2025 |
| Product Dimensions | 1.57 x 0.47 x 1.57 inches; 7.05 ounces | 1.57 x 0.47 x 1.57 inches; 1.3 ounces | 1.57 x 0.47 x 1.57 inches; 6.74 ounces | |||
| Batteries | 1 LR44 batteries required. (included) | 1 Lithium Ion batteries required. (included) | 1 Lithium Ion batteries required. (included) | |||
| Date First Available | September 23, 2022 | September 23, 2022 | September 23, 2022 | |||
| Manufacturer | Fitbit Inc | Fitbit Inc | Fitbit Inc | |||
| Country of Origin | China | China | China | |||
Advanced Health and Fitness Smartwatch
Lucie D.
Toulouse
May 19, 2025
As an engineer with multiple degrees, I approach tech purchases rationally, and I bought this to monitor my health and stay active, especially since I enjoy gaming and need something to balance my sedentary habits. After using it for a couple of weeks, I can say it does a decent job overall. The sleep analysis is thorough, breaking down my nights into stages and giving me a score—though I'm not sure how much it actually improves my sleep. The fitness tracking is solid, with built-in location tracking for my runs, and I appreciate the variety of exercise options, even if I mostly stick to a few. But here's the thing: is it worth the investment? For me, yes, but with reservations. The stress detection, while innovative, often feels gimmicky; it might tell me I'm stressed when I'm just focused on a game, which is ironic. Connectivity is good, but I've had moments where notifications lag or don't come through, which is frustrating. On the upside, the design is sleek and comfortable for all-day wear, and swapping the watch face is fun, adding a personal touch. Battery life is a standout—no complaints there. Would I recommend it? Probably, but only if you're serious about health tracking and don't mind some quirks. It's not perfect, but it gets the job done for now.
- Pros: From what I feel, the battery life is incredibly impressive, lasting over six days without needing a charge, which fits perfectly into my busy schedule. I liked that it tracks my heart rate and sleep patterns accurately, providing detailed insights that help me understand my health better. The ability to receive notifications and make calls directly from my wrist keeps me connected without constantly checking my phone, which is a huge convenience.
- Cons: However, I'm disappointed that the stress monitoring feature doesn't always feel reliable; sometimes it gives readings that don't match how I actually feel, which makes me question its usefulness. The interface can be a bit clunky at times, requiring multiple taps to access basic functions, and the initial setup was more complicated than I expected for a device in this category. Also, while it's water-resistant, I haven't tested it extensively in water, but the claims seem a bit optimistic based on my cautious nature.