The KTV Drive Pro Smart Pair is an advanced pair of cycling lights for commuters and cyclists looking for greatly improved visibility. The pair comes equipped with our Smart Connect wireless technology which allows them to be quickly programmed and customized by the companion LED Ally phone app. Once programmed and paired, the front light wirelessly controls the rear light, allowing for one-button turn-on and shut off as well as mode control of both lights simultaneously. Customize your setup with only the modes you need, with support for up to four mode-sets to serve a variety of applications. SPECS:- MAX LUMENS: 75 WEIGHT: 45g MAX RUNTIME: 19:30 hours RECHARGE TIME: 2:15 hours