Being seen is always a priority when cycling in low poor light conditions or in the dark. Ordinary rear safety lights accomplish this goal but a super bright rear light does it even better. Sword is your answer for enhanced visibility from the rear and sides when cycling. Infini sword is a super bright rear light . It comes with a usb rechargeable lithium polymer battery providing up to 200hrs of continuous use. A led light on the side of the light designates battery strength. Multiple settings satisfy needs in various terrains and conditions. Swords simple effective design mounts to most posts hassle free. Features mode memory function will memorize last lighting mode used excellent 50 lumens light output long burn time low battery charging and battery capacity indicator tool free installation easily mounts to virtually any tube shape from round to aero seatpost ipx4 waterproof standard specs size 80 x 24 x 31.5 mm weight 30 grams led 30 chips red cob led brightness 50 lumens battery rechargeable lithium ion polymer battery run time 6 hrs low beam2 hrs high beam200 hrs flashing1200 hrs flashing24 hrs pulsating charge 2.5 hrs strap fit oslash19 oslash35 mm manual download