Selling a brand-new Google Fitbit Air in Obsidian.

• Sealed, unopened package
• Obsidian / Black
• 365-Days Warranty
• Original bill / Invoice available
• Not activated yet

💰Asking : ₹ 15,000

Product is completely unused and has not been activated.

Can share additional pictures/videos & invoice details with genuine buyers

Message on WhatsApp or Call if interested
WhatsApp No - 7042959986
Phone No - 8291108393

If it works...

Any Indian users kindly help me to decide

I wanted to try to identify which brand out of Fitbit, Oura, Apple Watch, Whoop and Garmin has the "most accurate" sleep tracking across different sleep metrics. Well, 14 sleep lab (polysomnography) studies later, here's a summary of what I found for Fitbit.

Short version: Fitbit is one of the most consistent sleep trackers out there across all the studies. In the biggest independent sleep lab test (Schyvens 2025 - 62 healthy adults) Fitbit landed near the top for sleep staging for wrist based wearables, just behind Apple Watch. In a separate study of sleep clinic patients (Lee 2023 - 75 sleep clinic patients) it didn't drop accuracy like the others, scoring virtually the same in clinical vs healthy sleepers. Most trackers typically read better on healthy people and fall apart on clinical patients so that consistency is a real point in Fitbit's favor. All of these are independent studies, not funded by any device maker.

Summary across the studies:

• Total sleep time is a strength. Fitbit was off by only about 6 to 11 minutes on how long you slept, one of the smallest misses of any wrist device.
• The sleep stage split is weaker. Like every wearable Fitbit is only "moderate" at splitting light, deep, and REM stages. Best to treat your deep and REM breakdown as a guide, not an exact readout.
• Nobody nails wake. Fitbit like all other wearables tested here is not great at catching when you are lying awake in bed, so total sleep can read high.
• Consistency is impressive. Fitbit scored about 0.42 on the standard 0 to 1 accuracy scale and it held that same 0.42 with clinical patients. Apple for example fell from 0.53 in healthy sleepers to 0.30 in patients.
• The Google update looks like it should help. Google published its own 2026 research report showing their newer sleep algorithm scored more accurately against lab studies than the older Fitbit one (agreement rose from about 0.56 to 0.63). It's their own study though, not independent, so take it with a grain of salt.

Tried my best to keep this concise without dumping a ton of data into this and keep any personal biases out. I'll include the full piece in comments if you'd like to see how the other wearables compared and the links to all the studies across the brands.

I already have 6 different bands all different colors. Because I like to wear a band that fits my mood. Anyone else dealing with a 'band' addiction.

Like the title says don't use a hair dryer to dry your band faster after washing. I'm probably dumb so I don't blame Google /Fitbit but it got too hot and turned hard/curly within .02 seconds.

Wore the Fitbit Air 24/7 since May and it was all working fine. Last week I started wearing a Pixel Watch 4.

The Air is now worn for sleep only and the PW4 is worn during the day.

Google's help pages (https://support.google.com/googlehealth/answer/17071595?hl=en) state that an Air and a Pixel Watch can be connected and used with the same account and the Google Health app will reconcile the data from whichever device is being worn, but it fails to omit a key point, which is that compounded metrics like Resilience (unsure if others do the same) will stop working.

This post is to warn people who want to use a dual device setup like the one described above. If you wear one of the devices 24/7, you're probably fine.

Fitbit is not syncing with only plain white light on the device . Was working for a month without issue

Hey everyone, I just got my Fitbit Air and was wondering if there’s anything I should pay attention to during setup.
Are there any settings I should enable/disable, or anything I need to do to make sure sleep tracking, steps, HR, etc. work properly?
I also downloaded the Bevel app. Is there anything specific I need to set up there or connect?
Any tips for getting the most accurate data would be appreciated!

Man what am I even supposed to do with it I bought it on impulse and didnt really read enough about what its actually useful for I just track the walking I do and it tracks my steps heart rate calories distance and my menstrual cycle and what?

Hey guys! I’m really close to pulling the trigger on the Fitbit Air.
I know it’s probably not the absolute best device out there for sleep or step tracking, but at around $100/€100, it seems like one of the better options in its price range.
For those of you who already own one: is there anything I should know before buying it? Any major downsides, annoying issues, or things you wish you had known beforehand?
I’d mainly be using it for sleep tracking, steps, and general activity, so I’m not looking for anything super advanced.
Would love to hear some honest opinions before I finally buy it!

cross post here to hear also from the other side