... Exquisite appearance, aluminum magnesium alloy shell.Light weight, low density, good heat radiation, compressive strength Input:5V-0 ... 1-Exquisite appearance, aluminum magnesium alloy shell.Light weight, low density, good heat radiation, compressive strength. 2-Easy to color ... to carry, suitable for students,office ladies,Gift. 4-Intelligent control,Four LED indicators display battery power.Antomatic ...