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 are very helpful in knowing which rod is getting a hit. LOUD BLE ALARMS: Once a fish bites, the fishing alarm will sound an 80-decibel alarm to get your attention. You won't miss a single catch even if you're a hundred meters away or busy with other tasks. Note: Volume is not adjustable. WIDE APPLICATIONS: The alarm clamp opening measures 0.4 inches (1 cm), making it compatible with many different types of fishing rods, except those that are extremely thin. Suitable for sea fishing, ice fishing, fly fishing, trout fishing, and pier fishing in various environments. A great gift option for fishing enthusiasts. DURABLE CONSTRUCTION: Made from high-quality ABS material for excellent wear resistance and long-lasting durability. Color: Black Material: ABS Package Contents: 4 × Fish Bite Alarms Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by up to +/- 1-3 cm.