Reviews One Flash 40
Interested in reviews of One Flash 40? It got 4.6 out of 5 stars from our customers. Find specific customer reviews of One Flash 40 below. We will appreciate if you also share your experiences with One Flash 40 after purchasing.
User Reviews
Tomáš, Praha 21 - Újezd nad Lesy
Rated 02/10/2026, variant One Flash 40
Verified purchase - review from a price comparison website
The flashing modes are only at maximum intensity. It's a shame it doesn't have a flashing mode at a lower intensity too. As it is, on the flashing mode at night, it burns out the retinas of everyone behind me. Therefore, the flashing is unusable at night if you are a considerate user of this light. The only slightly usable flashing mode for night time is the pulsing light mode, where the intensity changes from the lowest to the highest brightness. However, according to the description on the box, the light lasts about 3 hours on this mode.
It shines and flashes very intensely
The flashing mode is only available at the maximum brightness.
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Igor, Praha
Rated 15/09/2026, variant One Flash 40
Verified purchase
Nice
When used on a steady light setting, it runs out of battery in 1.5 hours. The flashing mode probably lasts longer, but I expected more, not to have to charge it after every short ride (like a 1.5-hour one). I bought two, so I swap the dead one for a charged one, but it's a pain to do it after every single ride.
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Martin, Kozárov
Rated 01/09/2026, variant One Flash 40
Verified purchase - review from a price comparison website
Good price/performance ratio
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David, Náchod 1
Rated 08/06/2026, variant One Flash 40
Verified purchase
Shines nicely even in the daytime
battery life
many modes
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Veronika, Stochov
Rated 22/08/2025, variant One Flash 40
Verified purchase
I'm satisfied: )
excellent visibility even in daylight
USB-C rechargeable battery
lots of modes
memory for the last selected mode
low price
quick attachment
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Company
Rated 18/07/2025, variant One Flash 40
Verified purchase
Perfect
Usb-C
Shines very intensely
It remembers the set mod
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Petr, Velké Opatovice
Rated 06/07/2025, variant One Flash 40
Verified purchase
stone
super light,
super price
usbc charging
it shines very intensely
many modes - lighting, flashing, combination
nothing so far
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