Ampp 900 discover maximum durability and exceptional side visibility with ampp900. Crafted from robust aluminum ampp900 is designed to illuminate your two wheeled adventures for years to come. Its innovative opticubetrade lens technology amplifies your ride with a wide 900 lumen beam that will not disappoint. Never lose sight of your battery's life with the convenient 3 colour indicator. High power rechargeable headlight 900 lm powerful wide beam with opticubetrade lens technology robust aluminum body excellent side visibility large capacity lithium ion rechargeable battery 3 color battery indicator blue above 50% orange 50 30% red less than 30% usb c rechargeable usb c cable not included mode memory function five light modes high middle low daytime hyperconstant flashing turns on high mode with double click of power button sturdy flextighttrade bracket helmet mount and center fork bracket optional viz 300 pumping out an attention grabbing 300 lumens with opticubetrade lens technology the versatile viz300 stands out with the power of daytime hyperflashtrade mode and the friendliness of group ride mode. 3 leds 300 lm highly visible during daytime 300 degree visibility long rear beam projection opticubetrade lens technology lithium ion rechargeable battery usb c rechargeable usb c cable not included low battery indicator four light modes constant flashing group ride daytime hyperflash mode memory function battery auto save the mode automatically changes to flashing when the battery power gets low. New seat post bracket sp 15 which fits contemporary kammtail aero seatpost snap systemtrade tech specs ampp900 dimensions 32 x 102 x 33 mmweight 142 gramslight source white led x1 run time high mode 900 lumens 2 hrs middle mode 400 lumens 3 hrs low mode 200 lumens 5 hrs daytime hyperconstant mode 900 200 lumens 4 hrs flashing mode 200 lumens 35 hrs battery li ion rechargeable battery 3.7v 3000mahrecharge time approx. 4 hrs 1a 8 hrs 0.5arecharge discharge cycles about 300 times until rated capacity drops to 70%water resistance ipx4other features three colour battery indicator lighting mode memory function helmet mount centre fork bracket viz300 dimensions 25 x 75.5 x 34 mmweight 47 g with batterylight source red led x3battery li ion rechargeable run time constant 30 lumens 5 hrs flashing 30 lumens 45 hrs group ride 15 lumens 10 hrs daytime hyperflash 300 lumens 10 hrs recharge time 3 hrs 0.5a mount size oslash21.5ndash32 mm fits up to 130 mm outer circumference sp 15 bracketwater resistance ipx4other features battery auto save low battery indicator light mode memory