Viz 300 Lumens USB Rechargeable Rear Light

Key Features:3 LEDs (300 lm)Highly visible during daytime300 degree visibilityLong rear beam projectionOptiCube™ lens technologyLithium-ion rechargeable batteryUSB-C rechargeable (USB-C cable not included)Low battery indicatorFour light modes (Constant / Flashing / Group Ride / Daytime HyperFlash)Mode memory functionBattery Auto Save (The mode automatically changes to flashing when the battery power gets low.)New seat post bracket SP-15 which fits contemporary (kammtail) aero seatpostSnap System™Specifications:Dimension: 25 x 75.5 x 34 mmWeight: 47g (with batteries)Light source：Red LED X3Battery：Li-ion rechargeable batteryRuntime：Constant (30 lumens)：5hrsFlashing: (30 lumens)：45hrsGroup Ride (15 lumens)：10hrsDaytime HyperFlash (300 lumens)：10hrsRecharge time：3hrs (0.5A)Mount size：φ21.5-32mm. Fits up to 130mm outer circumference. (SP-15)Water resistant: IPX4Other: Battery auto save, Low battery indicator, Light mode memory