Description 2021 Bicycle rear light with unique white light, suitable for headlight use B4 Has the same size (45 g, 87 mm) and brightness (110 lumens) as its brother light, is of course waterproof and rechargeable, while offering an extra wide 150 degree With 492 feet of distance visibility, it's a competent daytime bike taillight. What’s News It has a special white light that can also be used as a headlight 5 Stylish Lighting Modes In addition to the common red solid/flash mode, this waterproof bike light offers 3 other eye-catching settings: Steady on White, flashing white, red and white strobe, eye-catching, absolutely guaranteeing your visibility USB rechargeable, great battery life 2 hours of charge = 4 to 10 hours of continuous use. For fast charging, simply connect the cycling light to any USB device such as a power bank, car charger or AC outlet adapter. (After receiving the light, please fully charge it before first use.) This rechargeable bicycle light fits every bike and can be installed in seconds without any tools, suitable for all types of bicycles, road bikes, Mountain bikes, hybrids, can also be used as helmet lights, backpack lights, wheelchair lights, scooter lights and warning lights.