The appropriately named Speck LED Micro Light (Time Machine Titanium) from Spotlight is just 1.24" (3.15 cm) long, but it delivers a bright 15 lumens of light for 1.5 hours, operating on 4x LR-521 batteries. The aluminum body is water resistant, weighs less than 0.2 oz (5.5 g), and comes supplied with a carabiner so you can attach it to a key chain or belt loop.
|Maximum Output||15 lumens|
|Battery / Runtime||4x LR-521 batteries/1.5 hour runtime|
|Waterproofing||Protected against spraying water--IPX-3 standard|
|Dimensions||1.24" (3.15 cm) length x 0.42" (1.06 cm) diameter|
|Weight||0.194 oz (5.5 g) with batteries|