Smartwatches with the longest battery when the screen stays on
The battery number on the box assumes the screen sleeps between glances. Switch the always-on display on and the makers' own figures drop, to as little as 25% of the headline here. The Amazfit Active Max and 2 others lead at 10 days with the screen always on. 21 watches publish the figure at all.
How this list is ordered: Ordered by the maker's own always-on-display figure, longest first, then by price. Watches whose maker publishes no always-on figure are left out rather than guessed. 21 of the catalog’s watches qualify.
1Amazfit
~$170Amazfit Active Max
Built around a 658 mAh battery, Active Max is the long-running member of the Active family: Amazfit rates it at 25 days of typical use and 64 hours of GPS.
- Always-on · claimed
- 10 days · 25 days
- Type
- Fitness
Android; iPhone with limits
2Amazfit
~$550Amazfit T-Rex Ultra 2
Amazfit's expedition model uses a 51 mm titanium-trimmed case, an 870 mAh battery and 64GB of storage.
- Always-on · claimed
- 10 days · 30 days
- Type
- Rugged outdoor
Android; iPhone with limits
3Amazfit
~$600Amazfit Balance Ultra
At the top of the Balance line, the Ultra swaps Balance 3's stainless frame for grade 5 titanium and adds a fifth button and a 780 mAh battery.
- Always-on · claimed
- 10 days · 30 days
- Type
- Fitness
Android; iPhone with limits
4Amazfit
~$450Amazfit Cheetah 2 Pro
Cheetah 2 Pro is Amazfit's runner's watch, with a grade 5 titanium case, sapphire glass, dual-band GPS and a red-and-white flashlight.
- Always-on · claimed
- 8 days · 20 days
- Type
- Running
Android; iPhone with limits
5Garmin
~$350Garmin Instinct 3 AMOLED
Garmin launched Instinct 3 in January 2025 in two display types, AMOLED or solar MIP, sold as separate models.
- Always-on · claimed
- 7 days · 18 days
- Type
- Rugged outdoor
Android; iPhone with limits
6Amazfit
~$370Amazfit Balance 3
Amazfit splits Balance 3 into a stainless steel model and a lighter titanium one, both with sapphire glass, a 3,000-nit 1.5-inch AMOLED screen and a red-and-white flashlight that the cheaper Balance 2 lacks.
- Always-on · claimed
- 7 days · 21 days
- Type
- Fitness
Android; iPhone with limits
7COROS
~$449COROS PACE 4 Pro
COROS's first PACE with a titanium bezel and sapphire glass, released in September 2026 above the plastic PACE 4.
- Always-on · claimed
- 7 days · 21 days
- Type
- Running
iPhone and Android
8COROS
~$249COROS PACE 4
Launched in November 2025, PACE 4 moved COROS's lightest running watch from a memory LCD to a 1.2-inch AMOLED with 164% higher resolution than PACE 3, per COROS.
- Always-on · claimed
- 6 days · 19 days
- Type
- Running
iPhone and Android
9Garmin
~$800Garmin fēnix E
Garmin's lower-cost fēnix keeps the 47 mm AMOLED body, maps and 10 ATM build but leaves out the flashlight, multi-band GPS, ECG app and speaker found on fēnix 9.
- Always-on · claimed
- 6 days · 16 days
- Type
- Multisport
Android; iPhone with limits
10Garmin
~$250Garmin Forerunner 70
Garmin's 2026 entry Forerunner puts a 1.2-inch AMOLED touchscreen and five buttons on a 40 g watch, and Garmin says it carries over training readiness, training status, wrist running power and running dynamics from its pricier Forerunners.
- Always-on · claimed
- 5 days · 13 days
- Type
- Running
Android; iPhone with limits
11Garmin
~$300Garmin vívoactive 6
Garmin's April 2025 health-and-fitness watch keeps the price low while carrying music storage, Garmin Pay and an AMOLED screen Garmin calls brighter than before.
- Always-on · claimed
- 5 days · 11 days
- Type
- Fitness
Android; iPhone with limits
12Amazfit
~$170Amazfit Active 3 Premium
Amazfit pitches Active 3 Premium at newer runners, with a stainless steel frame, sapphire glass and a 1.32-inch AMOLED screen that reaches 3,000 nits, up from 2,000 on Active 2.
- Always-on · claimed
- 4 days · 12 days
- Type
- Fitness
Android; iPhone with limits
13Garmin
~$300Garmin Forerunner 170
Built on the Forerunner 70, this model adds Garmin Pay, a barometric altimeter, a compass and 4 GB of storage in the same 42.6 mm case.
- Always-on · claimed
- 4 days · 10 days
- Type
- Running
Android; iPhone with limits
14Garmin
~$550Garmin Venu 4
Launched in September 2025, Venu 4 adds an LED flashlight, a stainless-steel bezel, multi-band GPS and the ECG app to Garmin's lifestyle line.
- Always-on · claimed
- 3 days · 10 days
- Type
- Fitness
Android; iPhone with limits
15Samsung
~$700Samsung Galaxy Watch Ultra2
An 800 mAh battery, the largest Samsung has put in a Galaxy Watch, gives the Ultra2 a rated 60 hours with the always-on display on, double the Galaxy Watch9.
- Always-on · claimed
- 60 h · 3 days
- Type
- Rugged outdoor
Android; some features need the maker's own phone
16Garmin
~$700Garmin Venu X1
A 2-inch rectangular AMOLED screen on an 8 mm-thick case sets this one apart from every round Garmin.
- Always-on · claimed
- 2 days · 8 days
- Type
- Fitness
Android; iPhone with limits
17OnePlus
~$300OnePlus Watch 3
OnePlus pairs a Snapdragon W5 with a low-power BES2800 chip so that Wear OS runs alongside a lightweight RTOS, which is how it claims multi-day battery.
- Always-on · claimed
- 36 h · 60 h
- Type
- Everyday smartwatch
Android only
18Google
~$350Google Pixel Watch 4
Still on sale a year after launch, the 2025 Pixel Watch shares the Pixel Watch 5's case sizes, weights, dual-frequency GPS, satellite SOS and battery ratings.
- Always-on · claimed
- 30 h · 30 h
- Type
- Everyday smartwatch
Android only
19Samsung
~$380Samsung Galaxy Watch9
Samsung's 2026 mainstream watch is the first Galaxy Watch on the Snapdragon Wear Elite platform, per Samsung, and its 40 mm battery is 20% larger than Galaxy Watch8's.
- Always-on · claimed
- 30 h · 40 h
- Type
- Everyday smartwatch
Android; some features need the maker's own phone
20Google
~$400Google Pixel Watch 5
Google's 2026 watch keeps Pixel Watch 4's case, weights and battery ratings but moves to Wear OS 7, doubles storage to 64 GB and, per Google, runs 20% faster.
- Always-on · claimed
- 30 h · 30 h
- Type
- Everyday smartwatch
Android only
21Samsung
~$500Samsung Galaxy Watch8 Classic
Samsung did not release a Watch9 Classic, so this 2025 model remains its only watch with the physical rotating bezel, now paired with a Quick Button.
- Always-on · claimed
- 30 h · 40 h
- Type
- Everyday smartwatch
Android; some features need the maker's own phone
Other shortlists
- Watches with the longest GPS battery
- Wear OS watches, and what each needs from your phone
- Watches that work with an iPhone, other than the Apple Watch
- Smartwatches with an FDA-cleared ECG
- Watches whose maker sells no paid tier
- The lightest GPS watches
- The cheapest watches with full topo maps
- The cheapest running watches with dual-band GPS