1,Highly Sensitive: 't worry that the siren will damage the fishing line. It is very sensitive and will not be affected by the external environment such as electric current and wind. As long as the fish bites the bait, the fishing alert will alert you immediately. You can also adjust the volume of the sound according to your needs. 2,Fishing at Any Time: The polices siren is equipped with LED lights, which can emit bright lights when fishing in the dark night. 't worry about not seeing it in the dark waters. Of course, this product is also suitable for daytime use, no time limit, enjoy at any time. 3,Equipped with Battery: the product is waterproof and powered by three AG13 button battery materials. 4,2 Specifications: the turntable type has a shorter trigger stroke but compared to the rocker type, the turntable type requires more force to trigger; the rocker type trigger stroke is relatively long; but compared to the turntable type, because the rocker type has a pendulum The arm increases the stroke, and according to the principle of lever, the trigger force is relatively low. 5,Wide Range of Application: suitable for different types of fishing rods, easy to use, only need to add this product to the conventional sea rod fishing, suitable for sea rods with a diameter of 12-35CM, it is very convenient to use. Suitable for sea fishing, ice fishing, fly fishing, bass fishing, trout fishing, kayaking fishing and dock fishing of different terrains. Name: Fishing Electronic Sound Alarm Prompter Applicable sea pole specifications: sea poles with a diameter of about 12-35cm/4.72-13.78in Applicable battery: use 3 AG13 button batteries Features: Microcomputer control circuit, three-color LED eye-catching prompt, adjustable sound Turntable type: It has a shorter trigger stroke, but compared to the rocker type,the turntable type requires more force to trigger Rocker type: the trigger stroke is relatively long; but compared to the turntable type, because the rocker type has a swing arm to increase the stroke, according to the principle of the lever, the triggering force is relatively low Colour:Black Material:plastic Package Contents: 1 x Fishing Bite Alarm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.