The 4-meter durable extension cord makes it more flexible, get easy access to place that's hard to reach, extend the portable power strip to table and other places easily  The USB ports with 2.1-Amp cumulative charging output suitable for all USB-enabled devices, such as cellphone, tablet, MP3, power bank and more The 3 AC sockets are suitable for all electronics, such as computer, television, washing machine, refrigerator, air-conditioning etc. Built-in safety shutters protect users from the direct touch of the live parts on the socket outlet It also has individual safety switch so you can turn off each socket when not in use to prevent any untoward electrical shock The wide spaced sockets are separated enough to fit big plugs without blocking each other Made of safe, fire-resistance materials with multiple built-in safeguards that fully protect against overcharging, overheating, overvoltage, overcurrent, overload and short-circuits