Carson Red LED StarMap Light Flashlight For Low-Light Use (SL-11) Red LED flashlight designed for low-light use Ideal for photography darkrooms, astronomy, and illuminating your tent without disturbing fellow campers Includes convenient attached keychain, making it easy to take with you everywhere Runs on two G13A button cell batteries (included) Measures one by 3.6 inches (W x D); one-ounce weight