Made of plastic.Measuring 2.36"x1.38"x0.43".It comes in five color options:black,white,blue,green,orange.The exterior is a rectangular casing with a keyring attached to the top. Inside, there is an LED device that functions both as a light and a keychain. Solar-powered and can be charged directly by sunlight.It is widely used in outdoor activities such as camping,mountaineering and cycling.Add your company name or logo for maximum visibility and entice more people over to your brand.Shipping via sea for the last two price tiers.