Powered by REDLITHIUM USB (universal serial bus), the USB rechargeable hard hat headlamp delivers 475 lumens of LED (light emitting diode) TRUEVIEW High Definition output, and is capable of all day run time, over 2000 recharges and 3 times faster charging (2.1A charge rate). Optimized for use with hard hats, the slip resistant strap and clips provide easy and secure attachment. IP54 rated water, dust and drop resistant body and lens allows it to withstand the toughest conditions. Get maximum control over output, beam coverage and run time with five different light modes, 7-position tilting light head, flood, spot, and spot/flood beam patterns, and up to 31 hours of run time. The REDLITHIUM USB battery can be recharged in the light via Micro USB or swapped out with additional REDLITHIUM USB batteries for virtually no down time. LED (light emitting diode) fuel gauge allows fast checking of battery charge. Spot/Flood Mode: 475 lumens 2 hrs., Flood High Mode: 300 lumens 4.5 hrs., Flood Medium Mode: 150 lumens 8.5 hrs., Flood Low Mode: 25 lumens 31 hrs., Spot High Mode: 300 lumens 4 hrs. No. 2111-21: Lumens: 475 Lm., Lamp Type: LED, Battery Included: REDLITHIUM USB, Light Modes: 5 Modes, Light Color: White, Run Time: 31 Hrs., Night Vision Mode: No, Pkg Qty: 1, Package Type: Clamshell