and Features:The outer layer, sealed without bolt, is made up of sturdy and durable ABS. Sound-light alarm device. Maximum volume up to 80dB.It is very sensitive to fish which swallows the bait. Usable with different kinds of rod in different terrain and weather.Power saving, and three batteries equipped can be in use for 1 or 2 years if the power is turned off when in no use.Portable and easily installed, no damage to fishing line. Easy to use, you can use the clamps on the rod, but also prompt light.As long as the fish will pull a sound and light alarm, even anglers fell asleep, light fish bait will prompt tips.Package Includes:1Pc x Fishing Bait AlarmSpecifications:Material: ABSColor: BlackWeight: approx.48gPackage Weight: approx.57gSize: As The Picture ShowsAlerts: Audio and VisualBattery: 3 x AG-13 Button Cell (included)Note:Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.