Warranty: 12 Months warranty, 30 days money return guarantee,24 x 7 email support.(Please check your laptop model and buy it with confidence!). 4 in 1 Versatile Charger: Comes with 3 USB C ports and a USB-A 3.0 port, when you connect 4 devices, power will be distributed efficiently between both ports to ensure you get the best charge. Foldable and Portable: The charger's compact size and foldable plug make it easy to take wherever you go, while saving valuable space in your bag or pocket. Universal Compatibility: From phones to laptops and more, our proprietary PowerIQ 3.0 technology provides flawless compatibility with virtually any mobile device. Turbo 4-Port Fast Charging GaN Charger: Powered by the latest Gallium Nitride (GaN) Technology, KAQIAR INC 100W Turbo 4-Port GaN Charger delivers ultra-fast charging speeds in a smaller form factor design compared to traditional silicon-based chargers. Charge your MacBook Pro 16" (M1 Max, 2021) to 100% in 1 hour and 20 minutes, so you can stay productive all day.