Add a simple yet effective source of illumination to your ride with the KTV Pro Drive Rear Bike Light from Lezyne. The lightweight light runs for a maximum of 19.5 hours with five lighting modes and an IPX7 waterproof outer as standard, to brighten up the road ahead with ease.Aero-post compatibleIPX7 waterproof ratingFive lighting modesWide Angle Lens - offers 270-degrees of visibilityIntegrated USB stick - for cable-free chargingBlast mode: 20 lumens / 4-hour runtimeEconomy mode: 3 lumens / 18-hour runtimeDay Flash mode: 75 lumens / 10-hour runtimeFlash 1 mode: 25 lumens / 8.75-hour runtimeFlash 2 mode: 10 lumens / 19.5-hour runtimeMax lumens: 75Max runtime: 19.5 hoursRecharge time: 3 hoursWeight: 45g