Fishing Bite Alarm. New Design Adjustable Volume, Won't Fall Off While Casting Like Clip-on Models Adjustable Volume unlike other models. From light only to VERY loud. Straps onto pole. Will not fall off like clip on model. No more loss to the lake. Batteries Included and replacable. 3x LR44/AG13 Buton cells The outer cover of the Sound-light alarm device sealed without bolt, is made up of sturdy and durable ABS. No damage to fishing line and the rods. it is very sensitive to fish taking the bait.