The sleek, compact E1B-MV has the broad max vision beam that is optimized for your field of vision with plenty of peripheral illumination. It is designed as an outstanding everyday-carry light for most any application. Click-type switch - partially press tail cap pushbutton for momentary-on high output; press further to click constant-on high. Return to off and press or click again within two seconds for low output. The brilliant 400-lumen high output beam provides a broad max vision beam that is optimized for your field of vision with plenty of peripheral illumination. The lumen low output is perfect for reading a map, checking an ID, or navigating in low light with minimal degradation to your dark-adapted vision. The backup can run at this level for 50 hours, a valuable feature for outdoor or emergency situations. A tough, lightweight mil-spec hard-anodized aluminum body protects the E1B-MV backup's sophisticated electronics, and its smooth contours minimize clothing snag and pressure points. A two-way clip allows head-up or head-down carry.