?WARRANTY SERVICE AND PACKAGE INCLUDED?: The warranty period is 1 year, during the warranty period the product encounters any quality problems, we promise to provide you with free return or exchange service,Customer service response time within 24 hours. Package include: 1 x 65W power adapter, 1 x power supply cord. ?MAGNETIC CONNECTOR?: The total length is 10 feet, no longer limited by the distance between the laptop and the outlet. Charging plug at the wire bending more than 20,000 times, durable. Magnetic plug, easy to dock, not easy to fall off. Charging indicator light, charging status instantly displayed. ?FAST CHARGING?: Audiophile grade wire, thickened tinned copper core, larger radius, better conductivity, faster charging. With surface pro 8 field test charging efficiency only 1.5h can be fully charged. Charging efficiency is better than 44W, 39W, 36W, 24W laptop/tablet chargers. ?SAFE AND SECURE USE?: SLIERT 65W laptop charger has been tested by aging before leaving the factory, with over-voltage, over-current, over-charging, overheating, and short-circuit protection, which is friendly to the battery.No laptop crashes or touchpad malfunctions, etc. ?WIDE COMPATIBILITY?: SLIERT 65W surface pro charger is compatible with Microsoft Surface Pro 9, 8, 7+, 7, 6, 5, 4, 3, X, Windows Surface Laptop 5, 4, 3, 2, 1, Studio, Surface Book 3, 2, 1, Surface Go 3, 2, 1 and more! . With a 5V 1A USB charging port, you can charge your phone or other devices at the same time.