Ultra-Visible 9 LED Bike Taillight Personal Safety Flasher - Visible 2500 Feet Be safe - be seen while enjoying outdoor activities - biking, running, walking, skateboarding Almost impossible not to see - 9 super-bright LED, special 'sparkle' lens with reflector Includes quick-release mount for bike handlebar or seat post plus belt/pocket clip Lights for up to 60 hours on 2 AAA batteries (not included); light function switch Durable ABS & polycarbonate material, weather-resistant silicon seal