Kryptonite Alley bicycle front light Make sure you are clearly visible with this bicycle light from Kryptonite. The set consists of a red lamp and a white lamp. With the built-in battery indicator you can see how much battery charge the lamp has. As soon as the charge is 25%, the indicator light turns red, as soon as the percentage is 50% yellow and at 100% the light turns green. The built-in battery can be charged via a USB cable. General specifications: Housing color: black Lamp color: white Material: plastic Dimensions: 22.3 x 14.7 x 7 cm (L x W x H) Weight: 0.33 kilograms Mounting position: handlebar Technical specifications: Light source: LED Number of lumens: 170 to 800 Power type: Battery (USB rechargeable) Lighting time: up to 24 hours at 170 lumens (flashing)