It can be set that the backlight will be automatically light when getting dark.
When it is necessary,you can press the button(Usually doesn't light can be set)
Buttery are not include.

• Size:L 150MM*H 38MM*W 70MM
• Shell Material:Plastic
• The Main Material:ABS the Button Material: Silica gel
• Net weight:170g
• Battery:V carbon batteries(3)

Size:L 150MM*H 38MM*W 70MMWuKong