The MK-10 is the perfect portable AA flashlight in a very small size. Since an AA battery delivers three times the electrical volume of a AAA battery, the MK-10 offers a brighter beam (Max. 160 lumens) and much longer runtime (Max. 39 hours at low light output) with LEDWAVE’s advanced lighting technology. Furthermore, the design featuring three modes of output, not only provides easy of operation, but also strikes a delicate balance between the important dual requirements of high brightness and extended runtime. If you are looking for a powerful? long running EDC flashlight in the smallest size, MK-10 is your perfect companion.