- Qi certified wireless charger This charger is built to the Qi standard, the most widely used wireless charging protocol. It is compatible with 99% of popular smartphone brands, so you can use it with confidence without compatibility concerns. - Lightweight and compact design Thickness: 0.3 inches; diameter: 3.9 inches; weight: 3.5 ounces. Made of aluminum alloy for a durable, refined look that is easy to carry. Its slim, portable profile makes it suitable for both office and home use. - Convenient and safe charging Simply plug in the power and place your phone in the center to begin charging immediately. It can charge through most protective phone cases without removing them. Smart protection technology includes temperature control to keep charging safer and more efficient. - Wide compatibility and fast charging Supports four output power levels: 5W, 7.5W, 10W, and 15W. Devices automatically adapt to the appropriate power level based on what is connected. When used with a compatible power adapter, it can deliver up to 15W fast charging. - Practical use scenarios Office or work desk: quick top-ups during the day without fiddling with cables. Nightstand or bedside table: easy, safe charging while you sleep, with the case left on. Travel or commuting: compact and lightweight design makes it easy to carry in a bag or briefcase and stay powered on the go.