Designed with dual ports (receptacles) allow plug-in two electrical devices at once. Built-in Surge protector! Well built and durable adapter (no moving parts). Small lightweight and easy to carry when travelling! Standard: Type M plug. The larger 15A plug version of the old British standard BS546. CE Approved, RoHS Compliant Grounded 3-Prong plug with round pins (diameter: 1X 8.7mm, 2X 7.0mm). Max Power: 3700 Watt (max 250 Volt, 15A)