Description Pumping out an attention-grabbing 300 lumens with OptiCube™ lens technology, the versatile ViZ300 stands out with the power of Daytime Hyperflash™ mode and the friendliness of Group Ride mode. Dimension: 25 x 75.5 x 34 mm Weight: 47g (with batteries) Light source：Red LED X3 Battery：Li-ion rechargeable battery Runtime：Constant (30 lumens)：5hrs Flashing: (30 lumens)：45hrs Group Ride (15 lumens)：10hrs Daytime HyperFlash (300 lumens)：10hrs Recharge time：3hrs (0.5A) Mount size：φ21.5-32mm. Fits up to 130mm outer circumference. (SP-15) Water resistant: IPX4 Other: Battery auto save, Low battery indicator, Light mode memory
