FREETOO Sensitive Electronic Fishing Bite Alarm Indicator Alert On Fishing Rod Sound - light alarm device for fishing. The alarm will notify you, when a fish hits or runs Small and exquisite design, easy to carry, easy to install. You only need to clip this alarm on rod, and then wrap the fishing line around alarm Will not damage your fishing line, very sensitive when fish swallows the bait. Don't ring in the wind but will when fish strike the rod Powered by three LR44/AG13 button cell material, energy saving Perfect for fishing at night, in complete darkness, they can be even more valuable since they not only emit sound, they also light up when a fish hits or runs