2.Power supply by solar , no wiring, no electricity fees, environmental friendly. 4.Turn the switch on, it give out a light at dawn automatically, turn off the light in the daytime. 1.Eight flash modes: the on / off switch once, the battery box enter standby, absorb sunlight during the day, automatically charge (the light is not on) and automatically light up in the dark. You can adjust the mode according to mode 3.Built-in lithium battery,Charging time: 6-8h under direct sunlight light duration: 8-10h under full power 5.Featured with ground stake, perfect to apply to the garden, villa, corridor, and floor etc.