A few days ago, a good friend from Equator Knives sent me a tiny but –surprisingly– bright flashlight, a Streamlight Nano Light: As tiny as peanut,  powered by 4 alkaline button cells (IEC-LR41), as bright as 10 lumens. For this size, 10 lumens is pretty bright.Here’s size comparison of Streamlight’s Nano Light and my house key. So […]