... alloy shell.Light weight, low density, good heat radiation, compressive strength Input:5V-0.5A Output:5V-1A Capacity:2000-2600mah ... alloy shell.Light weight, low density, good heat radiation, compressive strength. 2-Easy to color up,Magenta /Green/Bule/Black/Yellow ... carry, suitable for students,office ladies,Gift. 4-Intelligent control,Four LED indicators display battery power.Antomatic sleep to avoid ...