CatEye: Compact, bright, and versatile, the ViZ150 delivers exceptional rear visibility thanks to OptiCube™ lens technology and Daytime Hyperflash™ mode. Designed for safety in all conditions, it offers impressive runtime, multiple lighting modes, and a lightweight, aerodynamic-friendly mount, making it an excellent choice for both daytime and night riding. NOW WITH A 5 YEAR WARRANTY!! Features 3 LEDs producing up to 150 lumens Highly visible in daylight conditions 300-degree visibility with long rear beam projection OptiCube™ lens technology for enhanced clarity Lithium-ion rechargeable battery with USB-C charging (cable not included) Low battery indicator and Battery Auto Save function Four light modes: Constant, Flashing, Group Ride, Daytime HyperFlash Mode memory for convenience Includes SP-15 seat post bracket for standard and aero seatposts Snap System™ for quick mounting and removal SPECIFICATIONS Dimensions: 21 x 62.5 x 32.5 mm Weight: 27 g Light source: Red LED x3 Battery: Li-ion rechargeable Runtime: Constant (20 lumens) - 5 hrs, Flashing (15 lumens) - 70 hrs, Group Ride (5 lumens) - 33 hrs, Daytime HyperFlash (150 lumens) - 15 hrs Recharge time: 3 hrs (0.5A) Mount size: 21.5-32 mm, fits up to 130 mm outer circumference (SP-15) Water resistance: IPX4 Other features: Battery auto save, low battery indicator, light mode memory