Fitbit Air: 24 Hours Later

What’s being reviewed

This video is an early look at the Fitbit Air (a very slim, screenless wearable) after 24 hours—though it’s actually closer to ~30 hours due to a recording failure. The reviewer also provides commentary on Fitbit’s new Google Health app (formerly the Fitbit app).

The reviewer wears/compares the Fitbit Air against several other screenless wearables:

• WHOOP
• Polar (Loop Gen 2)
• Amazfit/Garmin? (Amazefit Helio Band)

---

Key product features mentioned

Hardware / design

• Fitbit Air uses a super-slim “performance loop” style form factor.
• It includes a pop-out “Pebble” charging connector/puck, seemingly designed with Fitbit/Pebble heritage in mind.
• The band is Velcro-backed with adjustable sizing.
• The charging cable is different from other Fitbit generations; the reviewer notes Fitbit has frequently changed chargers across generations.

Battery claim

• Fitbit claims 7 days of battery life.
• The reviewer plans to test later, noting Fitbit is historically fairly accurate with battery claims.

Activity & sleep behavior (auto detection)

• The reviewer uses it in full auto-detect mode, initially avoiding manual start/stop.
• Examples:
  • Bike commute was detected as an activity, but the start time was off
    • Device started ~8:45, user started ~8:31.
  • Interval run was detected as a run correctly within ~1 minute
    • It initially thought “trail run,” but the user corrected after.

What the app shows

• A customized top area with limited customization, including elements like weekly cardio.
• A chronological feed showing summaries of days/activities/sleep.
• Sleep view includes:
  • Sleep duration (example: 6h 51m)
  • Resting HR trend (green zone)
  • HRV alongside resting HR
  • Sleep stages/phases and quality benchmarks

Health/fitness tabs

• Health: consolidated metrics such as heart rate, cardio load, resting HR, HRV, SpO2 (blood oxygenation), active zone minutes, and estimated V2 max.
• Fitness: structured workouts, a workout library, activity history, and live workout views (e.g., heart rate, cardio load, energy burned).

---

Pros (based on what the reviewer observed)

• Very slim and comfortable-looking form factor
  • The reviewer emphasizes how much thinner Fitbit Air is compared to WHOOP (described as roughly half the width).
• Strong auto exercise recognition for runs
  • Runs were detected correctly quickly (within about ~1 minute).
• History-rich app timeline
  • The chronological feed and the ability to drill into sleep stages/metrics are viewed positively.

---

Cons / gaps mentioned

• Limited app customization
  • Biggest complaint: you can’t place many metrics in the top widgets area.
  • Missing examples: HRV status and other metrics the reviewer expects based on other platforms.
• Auto-detection timing inaccuracies for some activities
  • Bike start time was later than actual start by ~14 minutes.
  • The reviewer notes that other bands performed better, often within 1–2 minutes.
• Weather detection mismatch
  • The app indicated “rainy” when the reviewer didn’t observe it.
  • The reviewer says they already told Google and it will be investigated.

---

Comparisons made with similar wearables

WHOOP

• Reviewer claims WHOOP supports far more activity types (stated: ~90 million different activities).
• Reviewer asserts Fitbit’s activity detection is behind WHOOP (stated: Fitbit detects only ~5 activity types at best).
• Auto-detection performance: reviewer says other bands detected bike activity more closely than Fitbit Air.

Polar Loop Gen 2 and Amazefit Helio Band

• These were worn alongside the Fitbit Air to compare comfort and detection behavior.
• Mostly discussed in terms of fit/wear location and form factor:
  • Reviewer typically wears most bands on the bicep.
  • Fitbit Air reviewer notes Fitbit currently lacks a bicep band option.

Charging ecosystem

• Fitbit Air’s charging approach differs from Pixel Watch / other Fitbit chargers.
• Fitbit is lightly criticized for changing chargers every generation.

---

Numerical details / ratings included

• Battery: Fitbit claim of 7 days (not verified within the video).
• App example metric shown: sleep duration example of 6 hours 51 minutes.
• Timing accuracy examples:
  • Bike activity start detected ~14 minutes late (8:45 vs 8:31).
  • Run detected correctly within ~1 minute.
• Video timeline note: a “24 hours later” follow-up, but it ended up ~30 hours later due to recording failure.

---

User experience after ~24 hours

• The reviewer pairs the band, then uses it largely hands-off to evaluate how well auto detection performs.
• They explore the Google Health app with emphasis on:
  • the timeline feed
  • sleep drill-down (stages, HR trend, HRV)
  • training activity entries and summaries

---

Overall verdict / recommendation (based on the video)

• Promising hardware form factor: very slim design and good run auto-detection.
• Software/app limitations remain clear, especially:
  • restricted customization
  • some auto-detection timing/metadata inconsistencies (bike start time, weather mismatch)

The reviewer indicates they will likely recommend judgment later only after deeper testing—particularly around:

• heart rate accuracy
• breadth of automatic recognition
• overall app adequacy

---

Points mentioned by different speakers

• Only one speaker is clearly present in the subtitles.
• References to “my wife” indicate she wears a different color and contributes to parallel testing, but her distinct opinions aren’t elaborated beyond:
  • she wore a different band color
  • she had smaller wrist sizing
  • she used it for a run + ride + life/sleep