Weights: 20kgs/ctn working time: up 8hours(with full charged) Technology specification: 1.Solar energy batery: imported polycrystalline silicon solar energy battery sets 2.Light source: three high brightness led 3.Storage battery: three 1.2v 600mah rechargeable ni-mh batteries 4.Color of the light: white, green, yellow or tri-color, seven-colors are at customerÆs option. 5.Environment temperature:-20 to 70 centigrade 6.ááááá material of body: (1) stainless steel, (2)stainless steel brushed antique cooper color, Golden cooper color, blue cooper color, red copper color Good