*Size: 88×40.5x25mm
*Leather color: Black,Brown
*Device color: Pearl black,Pearl white
*Apply to 18650 40A high rate battery
*510 thread, spring connection
*Apply to 0.05-2.5Ω Coil
*Material: Leather,Aluminum, Zinc alloy,PC eyeglass
*Voltage rang: 3.15-8.5V
*Wattage rang: 5-70W
*USB charge port on the bottom