Planet Bike Superflash bike tail light High output surface mounted LED plus 2 5mm LEDs provide steady & Superflash modes. Run times: 60 hrs (steady  7 lm) and up to 100 hrs (Superflash - 7 lm). Provide 180 of visibility. Highly visible, even in daylight. Takes AAA Batteries (Best with Polaroid AAA Batteries). Water resistance rated to IPX6 standard. Includes seat post and seat stay mounts and clip mount for multiple mounting options Mount it to your rear rack with the Rack Bracket (#3108) which is sold separately. 75 grams. Rear bicycle light with flashing and steady modes Offers 1/2-watt Blaze LED and 2 eXtreme LEDs. Lightweight, ultra-compact, weatherproof housing Attaches to almost any bike via bike mounts and clip mount. 1-mile visibility; runs for 100 hours on 2 AA batteries Rear bicycle light with flashing and steady modes Offers 1/2-watt Blaze LED and 2 eXtreme LEDs Lightweight, ultra-compact, weatherproof housing Attaches to almost any bike via bike mounts and clip mount 1-mile visibility; runs for 100 hours on 2 AA batteries