Dear customer, Welcome to my shop. Please carefully watch the product description below (subject to the description). I wish you a happy shopping and a happy life! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Features: Sound-light alarm device and long service life. 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 LED Light Alert is the ideal indicator for night fishing. Descriptions: LED Indicator: visible for night fishing. Small and exquisite design, easy to carry, easy to install. Portable and easily installed. Specifications: Fishing Rod Category: Boat/Raft Rod Material: Plastic Position: Ocean Boat Fishing Accessories Type:Fish Bell/Alarm Dimensions: 3.03 x 2.17 x 1.57in/7.7 x 5.5 x 4cm Battery: 3x LR44/AG13 button cell Material: Plastic Color: Black Package Included: 1 X Fish Bite Alarm 1 X Anti-Slip Mat 3 X LR44 Button Battery