3 AAA batteries for power backup in the event of power supply interruption or disruption. Very easy to set and reset time and alarm functions. Great value for money. Great ergonomic design and illumination. Very cool consumer product design. Highly recommended.
Verified purchase: Yes | Condition: New
The digital clock can be used with either batteries or a usb power supply. Unfortunately when batteries are used the display switches off after 5 seconds to save power. We bought it to time a workout & it’s not near a power supply, so not fit for purpose for us. The mirror front was also scratched & marked on arrival, with no protective film to remove.
Verified purchase: Yes | Condition: New
Purchased to use in bedroom but light is so bright when plugged into power (even when dimmed) so have to run on battery but then can’t see time unless you click a button. Good clock but not for a bedroom.
Verified purchase: Yes | Condition: New
If you want to see the time displayed constantly, you need to plug it into a USB port, - which is a problem, especially, if you want to have the clock atop a shelf that is not close to a plug point. If you want a stand-alone clock, will not recommend this one,
Verified purchase: Yes | Condition: New
Great size, but the time isn’t constantly on display. I would’ve rathered an alarm clock where you can always see the time.
Verified purchase: Yes | Condition: New
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