This is approximately 7 inches tall and 4 inches wide. The light changes 7 different colors and is powered by either 3AA batteries or USB cable (Provided).

For $3 more you can upgrade to a rechargeable light. This will save you money on batteries and it looks better. Search under (images rechargeable).

Light not compatible with a cell phone brick.

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