Foxnovo Fishing Bite Alarm Electronic LED Sound Alert Bell Clip on Fishing Rod Color: mainly black. Material: durable hard ABS plastic. Size: about 5.3*7.5*4.3cm. Electronic Sound-light alarm device, with anti-slip mat. The outer layer, sealed without bolt, is made up of sturdy and durable ABS. Usable with different kinds of rod in different terrain and weather. Sensitive to fish which swallows the bait. This LED light alert is the ideal indicator for night fishing.