ABC Tech USB light bulb is a very practical and useful accessory. You may installed very fast in the USB ports. Match them with one of our batteries and you may create your own flashlight so you may use it whenever you need. You may choose the same colors for the battery and the bulb or you may mix them for a nice colorful flashlight. You have so many choices to customize this accessory! Use them outdoor, on trips or holidays. Anytime, anywhere with the ABC solution there will be light!