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The short answer · Balanced overview
Garmin Venu 4 (45 mm) leads the Balanced Bettr Score 66.0–56.5. The existing category models use the available evidence automatically; open the score details for sources and coverage.
Garmin
Keep this 1.77 in Venu configuration tied to your daily use. Its listed display, feature set, and battery claims give you a concrete place to start comparing. The catalog specifies a listed weight of 1.98 oz and a manufacturer battery claim of up to 12 days.
Bettr Score · Balanced
66/100
Start with what you want the tracker to do. Inspect the listed phone compatibility, features, and membership requirements before deciding what belongs in your day. The catalog specifies a listed weight of 0.42 oz and a manufacturer battery claim of up to 7 days.
Bettr Score · Balanced
56.5/100
15 shared verified specifications. The Bettr Score uses the available evidence automatically; independent tracking accuracy is not inferred from sensor presence.
| Garmin Venu 4 (45 mm) | Specification | Google Fitbit Air |
|---|---|---|
$549.99 Manufacturer source · 2026-09-10US manufacturer reference price or launch MSRP; not a live retailer offer. | Reference price | $99.99 ✓ WinnerManufacturer source · 2026-09-10US manufacturer reference price or launch MSRP; not a live retailer offer. |
smartwatch Manufacturer source · 2026-09-10 | Device typePersonal preference | fitness-tracker Manufacturer source · 2026-09-10 |
12 days ✓ WinnerManufacturer source · 2026-09-10 | Advertised battery life | 7 days Manufacturer source · 2026-09-10 |
1.98 oz Manufacturer source · 2026-09-10 | Device weight | 0.42 oz ✓ WinnerManufacturer source · 2026-09-10 |
164 ft Manufacturer source · 2026-09-10 | Water resistanceTie | 164 ft Manufacturer source · 2026-09-10 |
Yes ✓ WinnerManufacturer source · 2026-09-10 | Built-in GPS | No Manufacturer source · 2026-09-10 |
Yes Manufacturer source · 2026-09-10 | Continuous heart rateTie | Yes Manufacturer source · 2026-09-10 |
Yes ✓ WinnerManufacturer source · 2026-09-10 | ECG capability | No Manufacturer source · 2026-09-10 |
Yes Manufacturer source · 2026-09-10 | Blood oxygen sensingTie | Yes Manufacturer source · 2026-09-10 |
Yes ✓ WinnerManufacturer source · 2026-09-10 | Temperature sensing | No Manufacturer source · 2026-09-10 |
Yes Manufacturer source · 2026-09-10 | Sleep trackingTie | Yes Manufacturer source · 2026-09-10 |
Yes ✓ WinnerManufacturer source · 2026-09-10 | On-device display | No Manufacturer source · 2026-09-10 |
Yes Manufacturer source · 2026-09-10 | iPhone supportTie | Yes Manufacturer source · 2026-09-10 |
Yes Manufacturer source · 2026-09-10 | Android supportTie | Yes Manufacturer source · 2026-09-10 |
None Manufacturer source · 2026-09-10 | Required subscriptionTie | None Manufacturer source · 2026-09-10 |
Bettr Score
Garmin Venu 4 (45 mm)
66 / 100
Google Fitbit Air
56.5 / 100
Evidence-based guidance · Balanced model
One Bettr Score, using the existing category and priority models. Complete comparable independent tests take precedence; otherwise verified published specifications supply the score. Evidence and coverage are shown in the score details. Scores stay fixed across opponents; compare them within the same product group.
Review Garmin Venu 4 (45 mm)’s score details, sourced features and compatibility for your needs.
Review Google Fitbit Air’s score details, sourced features and compatibility for your needs.
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We may earn a commission when you buy through links marked “Affiliate link.” This does not change your price or our scores. How we earn
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