Smartwatch flashlight battery life varies more than you’d expect across REXQU’s four models with a built-in torch — anywhere from about five days of active use to over a month on standby. The right pick depends on whether the flashlight is your main reason for buying or just a nice extra on a watch you’d want anyway.
Smartwatch Flashlight Battery Life, Model by Model
| Model | Flashlight | Daily Use | Standby | Price |
|---|---|---|---|---|
| REXQU EnduroBeam | High-brightness + SOS strobe | — | 25–35 days | $159.97 |
| REXQU Beacon Pro | 20m beam + UV & SOS light | 5–7 days | 15+ days | $149.97 |
| REXQU Ridgeline | Flashlight + UV light | ~7 days | 15 days | $149.97 |
| REXQU Prisma | Built-in flashlight | 5–7 days | 30 days | $129.97 |
Longest Runtime: REXQU EnduroBeam
The REXQU EnduroBeam is the clear leader on smartwatch flashlight battery life — a single charge runs 25 to 35 days, roughly a month of use with the flashlight and SOS strobe available the whole time. That kind of runtime matters most for anyone who wants a torch on their wrist for genuine emergencies, not just the occasional dark hallway, since a dead battery defeats the point of an SOS light.
Everyday Pick: REXQU Prisma
If a torch is more of a nice-to-have than the main reason you’re buying, the REXQU Prisma makes more sense. It runs 5–7 days of normal use and up to 30 days on standby, all while staying a featherlight 30 grams with a 1.95-inch AMOLED — the kind of watch you’d wear to the office, not just the trailhead. The REXQU Beacon Pro lands in between with 5–7 days of daily use and 15+ days standby, plus a brighter 20-metre beam and UV light for anyone who wants more than just illumination.
What Actually Affects Runtime?
Flashlight use itself barely dents these batteries — a torch draws real power only while it’s switched on, and most people use it in short bursts. What actually determines smartwatch flashlight battery life day to day is the display: an always-on AMOLED screen and continuous heart-rate tracking cost far more power over 24 hours than a few minutes of torch light. Brightness matters too — a flashlight measured in higher lumens pulls more current per minute of use, which is part of why the Beacon Pro’s brighter 20-metre beam doesn’t outlast the EnduroBeam’s simpler, dimmer torch on paper.
Getting the Most Out of a Flashlight Smartwatch
- Use the magnetic charger for a full top-up rather than letting the battery run to empty repeatedly — lithium-ion cells generally hold their capacity longer with shallower, more frequent charges.
- If your model has an always-on display option, switching it off between uses is usually a bigger battery saver than avoiding the flashlight.
- Keep the SOS strobe in mind for genuine emergencies rather than everyday use — it runs brighter and drains faster than the standard beam, which is exactly why the EnduroBeam pairs it with such a long base runtime.
Flashlight Smartwatch Battery FAQs
Which model lasts longest between charges?
The EnduroBeam, by a wide margin — its 25–35 day runtime roughly doubles the next-longest model in the lineup, the Prisma, at up to 30 days of standby.
Does using the flashlight a lot drain the battery fast?
Not dramatically. Occasional use for a few minutes at a time has a small effect on overall runtime; the display and continuous sensors use far more power over a full day than the torch does.
Bottom Line
For the best smartwatch flashlight battery life, the EnduroBeam’s 25–35 day runtime is the one to beat. For a lighter, everyday watch that still has a torch when you need it, the Prisma trades some runtime for a slimmer, office-friendly build. Compare all four models on the smartwatches with flashlight collection page.
REXQU smartwatches are wellness devices, not medical devices. Heart-rate and sleep readings are for personal reference only — always consult a healthcare professional about medical concerns.