LED Hands Free Light, Aluminum, Maximum Lumens Output: 115, Black, 3.26 in/ OVERALL LENGTH: 3.26 INCHES NOMINAL OVERALL HEIGHT: 2.56 INCHES NOMINAL OVERALL WIDTH: 1.47 INCHES NOMINAL PART NAME ASSIGNED BY CONTROLLING AGENCY: LIGHT,HELMET LED SPECIAL FEATURES: ATTACHES ABOVE OR BELOW FULL BRIM FIRE AND INDUSTRIAL HELMETS; POWERED BY LITHIUM BATTERIES; WATER RESISTANT; LENS-HIGH TEMPERATURE, SHOCK MOUNTED, IMPACT RESISTANT BORO FLOAT GLASS; LIGHT SOURCE-C4LED TECHNOLOGY, IMPERVIOUS TO SHOCK WITH A 50,000 HOUR LIFETIME; BATTERY-TWO 3 VOLT CR123A LITHIUM BATTERIES WITH A STORAGE LIFE OF 10 YEARS; C4LED TECHNOLOGY FOR EXTREME BRIGHTNESS, IPX7 RATED DESIGN; WATERPROOF TO 1 METER FOR 30 MINUTES; VANTAGE LED TACTICAL HELMET LIGHT WITH WHITE LED MATERIAL: ALUMINUM BODY