Nice compact design and easy to flip the LED panel to change the light direction (in ceiling direction for example).
Regarding the needed power, as you can see on the picture, the device draws 1.37A from a 5 volts power supply (or from a USB charger). At 5.2 volts, it draws 1.5 amp and the LED's are just a little bit brighter.
It also works well under 5 volts (producing less light of course!!) but at 3.0 volts only, you can still get a decent amount of dimmed light which might be very interresting for battery operation.
Badges are related to the community, and users earn badges by creating quality content, completing missions, or by participating in special activities.
Helpful Badges
The Badge is awarded to users who are subscribed to the Invite Answer email and signifies their gratitude to help others. The badge appearance upgrades as the user helps more people.
OK
You are the expert,can you help?
We sincerely invite you to subscribe to the Invite Answer email!
If you subscribe, we will invite you via email to answer questions people have about products. By subscribing you'll also earn the "Helpful Badge"! You can unsubscribe at any time on the privacy settings page.
Help others and be happier!
Subscribe
Thank you for subscribing! You have also earned a badge!
Thank you! Your answer will help ###name### and ###num### other people!
Subscribe to "Invite Answer" emails and use your knowledge to help more people with product questions. By subscribing you'll also earn the "Helpful Badge"!
Badges are related to the community, and users earn badges by creating quality content, completing missions, or by participating in special activities.
Helpful Badges
The Badge is awarded to users who are subscribed to the Invite Answer email and signifies their gratitude to help others. The badge appearance upgrades as the user helps more people.
OK
You are the expert,can you help?
We sincerely invite you to subscribe to the Invite Answer email!
If you subscribe, we will invite you via email to answer questions people have about products. By subscribing you'll also earn the "Helpful Badge"! You can unsubscribe at any time on the privacy settings page.
Help others and be happier!
Subscribe
Thank you for subscribing! You have also earned a badge!
Thank you! Your answer will help ###name### and ###num### other people!
Subscribe to "Invite Answer" emails and use your knowledge to help more people with product questions. By subscribing you'll also earn the "Helpful Badge"!