Specifications: Small and exquisite design, easy to carry, easy to install. 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. Power saving, the three batteries equipped can be in use for 1 or 2 years if the power is turned off when in no use. No damage to fishing line, it is very sensitive to fish which swallows the bait. This Night light alert is the ideal indicator for night fishing. Item Name: Fish Bite Alarm Material: Plastic Battery: 3 x Button Batteries (Included) Size: 78*40*55MM Notes: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. Package Includes:1 x Electronic Fish Bite Alarm (3 Batteries Included)