EFM 65W GaN Wall Charger with Power Delivery and PPS - White" Get faster and most efficient charging in the home or at the office with the EFM 65W GaN Dual Port Wall Charger. Featuring dual Type C charging ports, you can quickly charge up two devices simultaneously. GaN, or Gallium Nitride technology, allows foor optimal charging efficiency and smallest formfactor. The biggest benefit of Gallium Nitride is that it produces less heat. Less heat means the charger components can be positioned closer together,