Each light has a luminous output of 20 lumens. It's ideal for cyclists who want to improve their visibility in road traffic, whether at night, in town, or during the day for road or gravel use. Thanks to its 2 silicone seals, it can be fitted without tools to any part of the frame or to a bag. Its central button makes it easy to use, with quick access to the different setting modes.This light has 4 operating modes, 2 continuous and 2 flashing. IPX 6 certified, the Vision F20 is water resistant, meaning it can continue to be used in the rain, plus with a long battery life, you'll be seen at all times throughout your journey without the worry of the light dying.This light can be recharged via a USB-C port (Cable not included)Front 4 Adjustable light settingsContinuous Low: 14hrs lifeContinuous High: 3.5hrs lifeFlash 1: 65hrs lifeFlash 2: 25hrs lifeRear 4 Adjustable light settingsContinuous Low: 8hrs lifeContinuous High: 2hrs lifeFlash 1: 33hrs lifeFlash 2: 9hrs lWhat's in the box?Vision