The Exposure Maxx D SYNC Bike Light with the updated App to allow the light to be, through a smart phone, programmed to tailor the light output or burn time to fit to the needs of the ride ahead, mode changeable via Bluetooth remote. 3 LEDs with spot Lens and 1 with spread combine to shine far down the track and highlight the trail edge at the same time. Backed with 4600 of measured Lumens through REFLEXX++ to automatically provide the right light when required.Exposure Maxx D SYNC Bike Light Highlights2-36 Hours Runtime2900 (Reflex 4600) LumensWeight 310gThe Diablo SYNC Mk5 gives you the widespread, high-powered beam, now at 2100 lumens, of a Diablo with SYNC Bluetooth connectivity for wireless mode changing and customisable runtimes via a smart phone and an updated app to get exactly what you need out it to keep you riding on the edge ... More info