This is the only travel adapter that detects power overloads and automatically resets itself for use after 20 seconds. Unlike typical single-fuse adapters that require fuse replacement (or burn out completely when overloaded), this model has a bi-metallic thermal sensor that withstands up to 10,000 cut-out cycles. Compatible with over 150 countries via buttons that press and slide for plug types, the adapter has a maximum 6-amp output that handles loads up to 1,500 watts at 250 volts and up to 600 watts at 100 volts. It also has four USB ports that provide 5-amp/25-watt power with stabilized voltage for safe, reliable charging of portable devices. 2 1/4" H x 2 3/4" W x 2 1/2" D. (5 1/2 oz.)