Plug these tiny LED modules into any standard USB port for instant light. Small and portable, fits in a wallet or on a keychain. Provides 100 hours of light when used with a 5000mAh power bank. Input Power: 5V 40mA (0.2W) 3x 2835 6000K Daylight White LED chips, minimal heat, always on These fun and inexpensive LED lamps can be plugged into any USB port for instant bright light. Make your own nightlights, flashlights, backlights and more.