Bluestone 921R94C 210 Lumens LED Pro Light Output Power: Up to 210 Lumens Size: 046mm x 269mm [1 7/8" x 10 5/8"] Weight: 586g [1 lb. 9 oz.] with batteries 4 x 1.5V C Size Alkaline Batteries [Not Included] LED Type: 1 Luxeon Rebel 90 White LED Burn Time: 90 hrs HIGH Maximum Output: 25 hrs] 270 hrs LOW