For your desk via a laptop USB, for your tent via a portable battery pack. This USB Bulb goes wherever you, and your Universal Serial Bus power sources, go. The light bulb charges and shines when attached to any device with a USB port. It emits light equivalent to that of a 40-watt incandescent bulb, spread over a large surface area using its wide-angle beam. A rocker switch turns the bulb on and off, and a 6' power cord gives plenty of room for hanging it overhead or leaving the computer on the desk while you illuminate your Gummi Bears from the couch. The light bulb has a shatter- and vibration-resistant design. Grab yours for 30% off retail price for a limited time from Dude Exclusives.