Lightweight and powerful the link is the perfect way to get noticed on busy city roads. Mounting the light up high on the helmet and combined with the daybright pulse pattern means it is not hidden from view by traffic or other distractions and will cut through any environment . With 360 degree visibility from a single unit it gives you the advantage of being noticed first. In the boxlink daybright mk4 gmb helmet mountusb c charge cable qs guide. Red specification srp 80 output 200 lumens front 40 lumens rear weight 45 grams burntime min 1.5 hrs max 16 hrs flash battery capacity 850 mah li ion dimensions mm length 70 head 29 back ndash 27 led's 1x xpg3 1x xpe r hours runtime 1 16 hours fl lumens measured output 200 40 grams weight 45g leds 1 x white xpg 1 x xpe red ip rating ip6 max lumens 200 40 battery 850 mah li ion runtime 1 16 hours fl charging time 3 hours weight 45g material anodised 6063 aluminium length 70mm head diameter 28mm in the box link db mk4 helmet mount usb c charge cable qs guide 3 year warranty on all of our lights and the leds inside are covered by a lifetime guarantee! Ensuring peace of mind with every purchase. Our lights are designed to last a lifetime so we carry out servicing and repairs on lights well beyond the warranty period