Topeak Mega Red lite (3x1.5x1.5-Inch) Used by both professional and amateur riders alike Made using high quality materials and components Tested to ensure quality and durability Wt. 64 g / 2.25 oz (light) 1 High-flux Piranha Red LED, 2 Super Bright Red LEDs and 2 Yellow LEDs 1.5V AAA x 2 (included) 5 Modes 5 Lumens (Max)