ABS Plastic digital alarm clock with wireless charger function (Fast Charge enabled). Retro design style features large digital clock display with 3 adjustable brightness levels and 2 alarm settings. Compatible with most phones that support wireless charging. It is recommended to check your device specifications before purchasing to ensure compatibility. Supports fast charging up to 15W when paired with any 20W+ or PD wall adapter. Power/Technology: Wireless Output: 5W/7.5W/10W/15W. NOTE: In order to achieve fast charge, this device must be powered by a PD20W (or above) or QC2.0 adapter. Novel imprint area for full color designs. Note: Most cases must be removed from phone for wireless charging to work. Uses 1 button cell battery (type CR1220), included and replaceable, for memory function. Includes instructions and USB A to USB C charging cable. Item size listed for item when flat, in use item measures: 5.5"W x 2.5"H x 3.5"D.