DetailsIf you want to add a light to the middle of a table for an event or party and don't want to have to run the cord to plug it in then this is the bulb for you. This bulb is a usb bulb and changes up to 16 different colors. All you have to do to is plug this into a small lipstick power charger. If you don't know what those are, we sell those on our site as well. Most people have and use lipstick chargers to charge their iphone or android device on the go. The small lipstick power chargers will power your light for up to 5 hours. We also have bigger power chargers that will power your light for more than 10 hours. These are great for wedding, events, boating, camping, etc!!