We are professional solar chargerÿfactory in Chinaÿwith more than 10 years experience in making solar products. We provide warranty of 1 year andÿ5 days no reason return for defect solar chargers. This 42w protable solar charger is in with high charging efficiency and light weight, ultra slim when it is folded, just like a handbag.but because of its high power,it can charger the mobile, camera very fast.