SparkFun LED - 3W Aluminum PCB (5 Pack, Warm White) SMD Products It’s the unit we like

It’s the unit we like to use as RTC backup and SRAM backup for GPS units

8 - 5V supply

Depending on how you interpret the data

All moving parts are protected within the housing

SparkFun LED - 3W Aluminum PCB (5 Pack, Warm White) SMD Products It’s the unit we likeSo much power and light from such a small package. This 5 pack of Warm white 3 Watt aluminum backed PCBs is sure to shed a lot of light on any project you add it to. These LEDs act as any other LED except these little guys require much more power while delivering a light as intense of a thousand suns going super nova (this is an exaggeration but you know what we mean)! Each LED in the pack sits upon an aluminum backed PCB to help with heat dissipation