Impulse - BlackThe Impulse is the ultimate personal multi-task light!Powered by 2 lithium coin cells, the Ultrabright LED burns up to 36 hours and has 3 modes: low, high and flash.With its quick release clip and hat clip, you'll want one for each of your keychains and packs.Specifications:Power - 10 LumensLamp - 1 Ultrabright LEDBurn Time - 36 HoursBatteries - two (2) # 2016 Lithium Coin CellWeight - .6oz or 17gWater Resistant - IPX4Warranty - 5 YearsIn the Box:LightHat clip*Sold as an Individual WARNING: This product can expose you to chemicals including BISPHENOL A (BPA) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.