Mini Flasher™ 2130 LED FlashlightThe 2130 is a hi-visibility LED flashlight that can be seen over half a mile away. Just twist to turn on. It is perfect for night-time bicyclists and joggers. It is powered by 2 L1154 1.2V alkaline coin cells that last over 100 hours before replacing. Because the Mini Flasher 2130 is submersible, it is also ideal for marking your dive team.