The ampp400s front light delivers 400 lumens with excellent side visibility and a sturdy flextight bracket, while the nano60 rear light is compact, lightweight, and designed for modern aero seatposts, offering strong visibility in all conditions. Both lights are usb-c rechargeable and feature memory modes, making them smart, reliable companions for any ride.Key featuresampp400s: 400-lumen wide beam with opticube lensnano60: 60-lumen rear light with daytime visibilityexcellent side visibility for added safetyfive front and six rear light modes for all conditionsmode memory and low battery indicatorsbattery auto save rear extends runtime in low powerusb-c rechargeable cables not included flextight front bracket and sp-14-ra aero rear bracketsnap system compatibility for multiple mount optionsipx4 water resistance for all-weather reliabilityhelmet and center fork mount options available front specificationsdimensionsampp400s: 36 x 100.5 X 38.5 Mmnano60: 30 x 32 x 30 mmweightampp400s: 106gnano60: 20.5Glight sourceampp400s: white led x1nano60: red led x1run timeampp400s:high 400 lm : 2 hrsmiddle 200 lm : 4 hrslow 100 lm : 8 hrsdaytime hyperconstant 400 100 lm : 6 hrsflashing 100 lm : 60 hrsnano60:high 20 lm : 3.5 Hrslow 3 lm : 20 hrsflashing 6 lm : 60 hrsgroup ride 10 lm : 25 hrsdaytime hyperflash 1 60 lm : 15 hrsdaytime hyperflash 2 20 lm : 20 hrsbatteryampp400s: li-ion rechargeable 3.7V 2200mah nano60: li-ion polymer rechargeablerecharge timeampp400s: approx. 4 Hrs 1a nano60...