Table of Contents
Fitbit Inspire 3 in Midnight Zen
A slim, color-screen fitness tracker with a 10-day battery rating, an entry-level price and two band sizes in the box.
This visual guide goes through the Inspire 3 the way an engineer would. It starts with the blueprint, then covers the colors, the sensors, the battery, the price and who it suits. Every drawing is made in code.
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- Display
- Color AMOLED
- Size
- 39.4 × 18.5 × 11.7 mm
- Weight
- 0.62 oz
- Water rating
- Up to 50 m
- Battery
- Up to 10 days
- GPS
- Not built in
Small tracker, big battery
Fitbit launched the Inspire 3 in September 2022 at $99.95, the same price as the Inspire 2. The biggest upgrade is the display. It is the first Inspire with a color AMOLED screen, and an oxygen sensor arrived with it.
Tom’s Guide lists the case at 39.4 by 18.5 by 11.7 mm and 0.62 oz, light enough that you stop noticing it. The Digital Trends reviewer said it gave him round-the-clock comfort that no other watch had managed. Fitbit rates the battery at up to 10 days, and as the battery section below shows, reviewers got close to that, with some caveats.
The blueprint
This schematic is redrawn for this page from published dimensions: 39.4 mm long, 18.5 mm wide and 11.7 mm thick. It is not an official Fitbit drawing. The display size and the positions of the sensors and charging contacts are illustrative.
- 1Front: color AMOLED touchscreen
- 2Back: optical sensors for heart rate and SpO₂, position illustrative
- 3Back: charging contacts for the proprietary cradle, position illustrative
Midnight Zen and two band sizes
Retail listings for the Inspire 3 show the classic wristband in both small and large, so you can choose the fit that suits your wrist without buying a second band. Listings also show Lilac Bliss and Morning Glow colorways, though names and stock vary by seller. Measure your wrist and check Fitbit’s size chart before you pick the band you wear.
What it measures
The Inspire 3 covers the basics well. A retail listing names 24/7 heart rate tracking, more than 20 exercise modes and real-time pace and distance. Sleep tracking is a highlight, and one reviewer valued the nightly sleep score most. The SpO₂ sensor reads blood oxygen.
There is no built-in GPS, which reviewers flag as a drawback. Some insights, including the Daily Readiness Score named in Amazon listings, sit behind Fitbit Premium. Listings include six months of it, so you can try it before you pay. The charts below are sample shapes, not real data.
Heart rate
24/7 tracking.
Sleep
Stages and a nightly sleep score.
Blood oxygen
A sensor new to the Inspire line.
Steps
Movement hour by hour.
20+ exercise modes
From walks to workouts.
Pace and distance
Real time, but no built-in GPS.
Daily ReadinessPremium
Needs Fitbit Premium for the full picture.
Color display
Bright AMOLED with an always-on option.
Built for daily wear
Battery: reviews mostly agree
Fitbit claims up to 10 days. Pocket-lint got exactly that with the always-on display off, and Digital Trends still had 40% left after a week of constant use. With the always-on display on, reviewers disagree. Android Authority says it cuts the runtime to about three days, while TechRadar and Gadgetflow report close to 10.
Charging takes about two hours on a proprietary cradle, with no quick charge. One reviewer found the cable tricky to disconnect.
Water resistant to 50 m
The Inspire 3 is rated for up to 50 m of water resistance, which covers showers and swimming. Wearing it day and night is part of the appeal, so the band is the part that gets sweaty and dirty. Rinse it from time to time.
Price and Premium
The launch price was $99.95, and Tom’s Guide says it can often be found near $75 on sale. This table is a snapshot from reviews, so check today’s price before you buy. Premium is the other cost: listings include six months, after which one reviewer says it costs $9.99 a month.
| Item | Price | Source |
|---|---|---|
| US launch price, September 2022 | $99.95 | Tom’s Guide |
| Typical sale price | about $75 | Tom’s Guide |
| Amazon price in one review | $94 | Gadgetflow |
| UK reviewed price | £85 | Expert Reviews |
| Optional waistband clip | $19.95 | Android Authority |
| Premium after the trial | $9.99 a month | Gadgetflow |
Prices change by country and seller. Amazon shows the current price for your region.
What’s in the box
Listings show the tracker, the classic wristband in both small and large, and a charging cable. Fitbit also sells an optional clip for wearing the tracker on a waistband.
What reviewers say
Reviews are warm. Tom’s Guide gave it an Editor’s Choice award and calls it the best tracker for most people. Live Science likes it too, but notes that comparable bands from other brands cost less.
Praised
- Long battery life, close to the 10-day rating
- A bright color screen, a big step up from the Inspire 2
- Light, slim and comfortable to wear around the clock
- Good sleep tracking and a polished Fitbit app
Criticized
- A small display
- No built-in GPS
- Some insights need Fitbit Premium
- A short charging cable that is tricky to disconnect
- No altimeter
The verdict
The Inspire 3 is a comfortable, long-lasting tracker that does the basics well and looks good doing it. It is an easy pick as a first fitness tracker, and a strong one for sleep and step tracking. The trade-offs are plain: a tiny screen, no built-in GPS, and Premium for some insights.
A good fit if you
- Want a first fitness tracker
- Care about sleep and daily steps
- Hate charging every night
- Prefer a slim band to a watch
Hold off if you
- Want built-in GPS for runs and rides
- Need a bigger screen or smart features
- Dislike subscriptions for extra insights
- Can find a cheaper rival you like
Make the most of it
- Wear it for a week so your baselines settle
- Charge it at the same time each week
- Choose the band by Fitbit’s size chart
- Use the Premium trial, then decide
Ready to try the Fitbit Inspire 3?
Check the current price and band options on Amazon.
Figures come from reviews by Tom’s Guide, TechRadar, Digital Trends, Android Authority, Pocket-lint, Trusted Reviews, Expert Reviews, Live Science and Gadgetflow, plus a PB Tech listing. Prices and stock change, so confirm them with the seller. All drawings are made in code for this page. Charts show sample shapes, not measurements, and the blueprint is a schematic, not an official drawing.
