The Inova T1 provides a palm-sized punch. It emits constant, non-dimming, full-power light for up to 1.5 hours per battery. The rugged, durable T1 is the solution for the professionals who want far-reaching brightness (up to 150') in a size that fits easily in a shirt pocket. As with all T-Series flashlights, a convenient lanyard hole expands transport options. Other characteristics include a 35-lumen LED flashlight and a TIROS optical system, which offers over 90% light projection and end switch control - press for momentary on or click for constant on/off. This flashlight has an Aircraft aluminium body, with Type III Anodised finish, engineered and built to a highly professional standard.