Product details:
C4 LED technology, impervious to shock with a 50,000 hour lifetime. 120 lumens measured system output, 6,800 candela peak beam intensity, and 165 meter beam distance, runs 11 hours. Three "AA" alkaline batteries (included). Push-button on/off switch easy to use even when wearing heavy gloves. One meter impact-resistance tested. Package includes both elastic head strap and rubber hard hat strap. Intrinsically safe Class I, Div 1. L x W x D: 1.88-Inch x 2.5-Inch x 3.08-Inch (4.76 x 6.35 x 7.82 cm). 7.1 oz (202 g) with batteries and head strap. Available in yellow. RoHS compliant.