Multipurpose flashlight with dual red LEDs and dual white LEDs, for a night vision protecting red light or regular white light, both easily controlled by a switch. A convenient control wheel allows you to adjust the brightness for a little less or more light. The casing is constructed with a durable plastic and includes a neck strap. Includes a standard 9 volt alkaline battery, which under normal usage will run for many hours. The total weight with the battery is only 4oz. Great for astronomy and aviation applications.