YYGIFT Best Seneitive Electronic Fishing Bite Alarm Indicator LED Sound Alert On Fishing Rod -Black Brand new items, good quality, portable and easily installed Easy to find the fish coming. Prefect 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. Powered by three LR44/AG13 button cell material, energy saving Package:1 x Alarm,1 x Anti-slip mat, 3 x LR44 button battery.