1. Step up voltage converter 300W, Convert 120v to 220v. It is an ideal product to let you use 220V countries appliances(Europe and Asia) in 110v countries (The US , Canada or Mexico). 2. Two Outlets, Compatible with plugs in Europe, China, Korea, etc, can use 2 equipments simultaneously. Plastic shell insulation leakage protection, no worry electric shock. 3. Small Size: with ultra-thin toroidal transformer, slim(21.5 * 15.3 * 5.2 cm/8.46 * 6 * 2.05 in), light weight(2.7 kg/6.0 lb), energy saving, quiet and high efficiency. 4. Safety: CE & CQC Certified! Built-in microcomputer control system, assure multiple protections: thermal protection, fuse protection, overload protection, short circuit protection. 5. NOTICE: 300W rated, please DO NOT overloaded, it will be alarming or even turn off automatically!