Quick Stats:2 - 36 Hours Runtime2900 (Reflex 4600) Lumens Measured Output310g Grams WeightTech:SYNC allows you to control the light with a remote switch and to make custom programs in the Exposure SYNC App, additionally both helmet and handlebar lights can be simultaneously controlled with a single remote via Bluetooth connectivity. App is available in both iOS and Android platforms.Smart Port+ enables the charge port to accept auxiliary accessories such as rear lights, remote switches, Support Cells and use your light as a power bank to charge USB devices.An LED display panel that gives clear information on which mode the light is in, runtime remaining in hours and minutes, percentage charged and feedback information during OMS.