: : Power system: Solar / Batteries systems to switch power.
: : Function: Steady/Flashing/Scrolling text / Off, cycling switch.
: : Spec of Solar panel: 37 x 22 x 2.5mm
: : Life time / Solar power：Full recharge for 4 hours can use for 1 hour in steady mode
: : Life time / battery： steady/50 hrs, flashing/100hrs, Scrolling text / 150 hrs
: : Li-ion Cell: ：3.7V，240mah
: : Easy installation and tool free