This is approximately 7 inches tall and 3 inches wide at the base. The light changes 7 different colors and is powered by either 3AA batteries or USB cable (Provided).

For $4 more you can upgrade to a rechargeable light. This will save you money on batteries. Search under (images rechargeable light).

The lights are not compatible with a branded brick (apple).

If you want a USB Adapter search under (IMAGES USB Adapter) and add to cart. They are $2 each, sold only with a light.