★Solar Panel：2.5W/pcs, life span approximately is 25years.
★Controller:Controlled by intelligent microcomputer, prevent over-charge & over-discharge, protect short circuit output and switch by itself  as the lighteness
★LED:16 LED18000-20000mcd Super Bright white LEDs, The time of use is 5000hours
★Storage Batteries:One Solar special storage Battery. Quality assurance time is 2 years.（America Leoch）
★Main Material: Aluminium alloy.
★Character: With enough charge, it can lasts for 5 whole nights
★Brightness: Be Equal to save-energy light of 3W,and common light with 4.8w. Highness:0.47m.