[Customer Service] We provide a 2-year warranty for the wall clock. If you experience any quality or usage issues, please contact us promptly. We will either replace the product with a new one or provide guidance on setup and usage. [Power Supply] This large black wall clock requires an AC adapter (not included) with a 5V/1A power requirement. It is accompanied by a 3m USB power cable. [15" Large LED Wall Clock] This aesthetically appealing wall clock showcases large LED numbers, making it an ideal gift for LED wall decor enthusiasts. The prominent LED numbers are clear and easily readable, even at night or from a considerable distance. The digital wall clock's dimensions are 15.0x5.1x0.9 inches, and it weighs 360g. [Alarm Clock with Remote Control] This RGB neon clock is equipped with a remote control that enables you to set the time format to 12/24 hours, date, 3 levels of brightness/Auto brightness, temperature display in ?/?, and an alarm with a snooze function. It is user-friendly to operate with the remote control, and the included CR2025 button battery is for the remote control. [Light-Up Wall Clock] This 3D LED digital wall clock comes with a night light feature, allowing you to adjust the brightness for solid colors. The remote control can be used to set the brightness to High/Medium/Low/Auto/Off. Moreover, the built-in light sensor enables automatic dimming with 8 levels based on ambient light. The adjustable brightness ensures clear readability, whether in strong light or during dark nights. [15" RGB Modern Wall Clock] This large black wall clock with a multi-color LED display features 6 solid colors, RGB light, and gradient light. It's perfect for decorating your living room, bedroom, classroom, meeting room, college dorm, or gym. This neon clock is a must-have for anyone looking to add a modern and aesthetic touch to their space, especially for gaming room decor.