The lezyne zecto drive led rear light is the commute road mtb rechargeable safety light has three high intensity red leds which are mounted in custom mor lens for increased output efficiency the rear bike light has 180 degrees of visibility with multiple side leds which double as charge and power indicators so you know how much juice you have left the compact size 40mmx40mm x 35mm and composite body is engineered with alloy bezel making it lightweight 52g with strap and tough