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Smartwatches: Battery life (smartwatch mode) from 21 days + ECG

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Smartwatches: Battery life (smartwatch mode) from 21 days + ECG

39 models from 5 brands, 2021–2026 — every model in the catalog with these features, best scores first.

Battery life (smartwatch mode) from 21 daysECG

Open in catalog

Models39

Brands5

Newest2026

Median score8.2

Sorted by score

Smartwatches: Battery life (smartwatch mode) from 21 days + ECG — best rated

Withings · 2021

Scanwatch Horizon

30 days10 ATM

9.7

Garmin · 2023

Epix Pro (Gen 2) Sapphire Edition 51mm

1.4″31 days10 ATM88 g

9.3

Garmin · 2022

Tactix 7 AMOLED Edition

1.4″31 days10 ATM96 g

9.3

Garmin · 2025

Tactix 8 51mm AMOLED

1.4″29 days10 ATM92 g

9.2

Withings · 2024

ScanWatch Nova

30 days10 ATM129 g

9.2

Garmin · 2025

Quatix 8 51mm AMOLED

1.4″29 days10 ATM92 g

9.1

Garmin · 2025

D2 Mach 2 51mm

1.4″26 days10 ATM92 g

9.1

Garmin · 2024

Fenix 8 51mm AMOLED

1.4″29 days10 ATM102 g

9.1

Garmin · 2026

Fenix 9 Pro inReach 51mm

1.5″31 days10 ATM99 g

8.8

Garmin · 2025

Fenix 8 Pro 51mm AMOLED

1.4″27 days10 ATM90 g

8.8

Garmin · 2026

Fenix 9 Pro 51mm

1.5″31 days10 ATM99 g

8.8

Garmin · 2026

D2 Mach 2 Pro

1.4″24 days10 ATM90 g

8.7

Huawei · 2026

Watch 6 Pro

1.5″35 days5 ATM60 g

8.7

Garmin · 2026

Fenix 9 51mm

1.4″29 days10 ATM91 g

8.6

Garmin · 2023

D2 Mach 1 Pro

1.4″25 days10 ATM126 g

8.6

Xiaomi · 2025

Redmi Watch 6

2.1″24 days5 ATM31 g

8.4

Coros · 2024

Vertix 2S

1.4″36 days10 ATM87 g

8.3

Garmin · 2024

Enduro 3

1.4″36 days10 ATM63 g

8.3

Garmin · 2026

Enduro 4

1.4″36 days10 ATM66 g

8.2

Coros · 2026

Pace 4 Pro

1.47″21 days5 ATM51 g

8.2

Withings · 2023

Scanwatch Light

30 days5 ATM27.1 g

8.1

Xiaomi · 2025

Redmi Watch 5

2.1″24 days5 ATM33.5 g

8.0

Huawei · 2025

Watch GT 6 Pro

1.47″21 days5 ATM54.7 g

7.8

Huawei · 2026

Watch GT 7 Pro

1.47″21 days5 ATM55.5 g

7.8

All 39 in the catalog

Brands in this collection

Garmin23Coros5Withings4Huawei4Xiaomi3

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