?Warranty? 1-year manufacturer's warranty. With our headquarters in Taiwan and branch offices in the United States, Japan, China, and South Korea, we are able to communicate and support our world-side customers 24/7 with fastest response. ?Supreme Quality & Safety Mechanism? Gigastone wall chargers comply with UL regulation which brings out best quality and verified safety mechanism, including Over-voltage protection, Over-charge protection, Over-heat protection, Over-current protection, and Short-Circuit protection. ?Laptop 100W Full Speed Charge? Authentic 100W Max Output Perfect for MacBook Pro / MacBook Air / Dell XPS / HP Envy X360 / HP Spectre X360 / Google Pixelbook / MicroSoft Surface / Acer Nitro / Acer Swift / Lenovo Chromebook / Lenovo Yoga/iPhone 15 pro max/iPad pro/iPhone 14/iPhone13/iPhone 12. ?Gigastone Advanced Power Delivery Technology? With most advanced PPS technology & Intelligent power allocation, Gigastone GaN Chargers charge your devices with maximum power by automatically adjusts output voltage & current in real-time, detects power demand from each device then provides best charging efficiency for multiple devices. Gigastone Power Technology not only decreases power conversion loss and produces less heat but also greatly increases lifespan of batteries in devices. ?Revolutionized Fast Charging GaN III Technology? The 3rd generation semiconductor material Gallium Nitride features fast switching speed, small size, high efficiency and fast heat dissipation. With elegant compact size with foldable plug, Gigastone GaN charger is your best choice for travel, saving you from cord clamp trouble with design of 3-Port output in one small size charger block providing fast charge for 3 devices at same time.