USB Powered & Compact Design - Powered by USB Type-C cable, can be connected to computer or power bank directly. Compact size (16 x 14 x 1cm) with foldable stand easily accommodates transport and storage, fits next to your laptop, on the kitchen counter, on your cabin desk and anywhere else. Touch Control and Stepless Adjustment: With sensitive touch control key, built-in 3 color temperature modes (warm/warm white/white) and adjustable brightness (2000-1000 lux). Stepless adjustable color temperature and brightness by long pressing the touch control button, allowing you to change the brightness and color temperature as you like to provide the most comfortable environment. Account Countdown and Considerate Memory Function: This SAD light has a built-in 15/30/45/60mins automatic timer; we recommend starting with 15 minutes then gradually increasing to 30 minutes to 1 hour daily until you find a time that works best for you. All settings will be automatically saved for next use, avoid re-adjusting settings every time you use it. Widely Uses: Small size and light weight take up little space and equipped with stand so it is flexible to stand in different standing positions. It can be widely used at home, office, cafe, yoga class, etc. Let the warmth of natural light feel on cloudy days and keep your mood happy