ADJUSTABLE SENSITIVITY: These electronic fishing bite alarms are designed to alert you when a fish is hooked. The sensitivity of the fishing alarms can be controlled by adjusting their angle, which helps to exclude the effects of strong currents and wind. When fishing with more than one rod, these alarms are helpful in identifying which rod has a bite. LOUD BLE ALARMS: When a fish bites, the fishing alarm emits an 80-decibel sound to get your attention. You won't miss a single bite even if you're a hundred meters away or occupied with other tasks. Note: Volume is not adjustable. WIDE APPLICATIONS: The fishing bite alarm clip opening measures 0.4 inches (1 cm), making it compatible with many different types of rods, except those that are extremely thin. Suitable for sea fishing, ice fishing, fly fishing, bass fishing, trout fishing, kayak fishing, and pier fishing in various environments. A great gift option for fishing enthusiasts. HIGH WEAR-RESISTANCE AND DURABILITY Color: Black Material: ABS Package Contents: 4 x Fish Bite Alarm Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3 cm.