... you Model No.Specifications SBD28B651, Solar panel: 0.7W. 2, Battery: 3.6V / 900mAh. 3, LED: 0.06W * 4 pcs. 4, Working time ... charge: More than 15 hoursSBD30B651, Solar panel: 0.7W. 2, Battery: 3.6V / 900mAh. 3, LED: 0.06W * 4 pcs. 4, Working time ... charge: More than 15 hoursSBD806B651, Solar panel: 0.7W. 2, Battery: 3.6V / 900mAh. 3, LED: 0.06W * 4 pcs. 4, Working time ...