Input: 100-240v, 50-60Hz Ensures a sophisticated circuit design with over-heated,over-current,over-charging protection. Safe design and high quality material ensures the chargers temperature maintaining at a low level for security charging. The power adapter is very durable and easy to operate. It is with multi safety protection and secure to use. Higher energy efficiency, friendly to the earth. Manufactured with the highest quality materials. 30 days money return guarantee,excellent service and 100% satisfaction!please rest assured purchase.