It works as stated, I can achieve 44.9w charging as indicated. Even without air-conditioning the charger gets warm, but never uncomfortable to hold in the hand or touch even 2hrs hours of prolonged charging at max wattage. Casing is sturdy and quality, only feedback is the prongs are not foldable but its ridiculously compact size compensates for that. Last thing to note that's actually the wrong picture. It's actually cubic in size and just that very tiny bit thicker than the Apple 20w charger. It's not longish but squarish,