Material: LED Size: 8cm/3.12" Chain length-33.5cm/13.07" Color: As shown 1. High-sensitivity Spool Alarm, a must-have signal alarm light for night fishing, accurately prompts fish bites and increases the success rate of fishing. 2. Built-in LED light design, strong visibility at night, with soft chain structure, can be easily fixed on clothing or fishing rods, carry with no burden. 3. Lightweight and portable oscillator alarm device, suitable for a variety of fishing scenes, such as sea fishing, lake fishing, stream fishing, etc., with a wide range of applicability. 4. Low power consumption and long battery life design, powered by button batteries, energy-saving and environmentally friendly, suitable for long-term outdoor use. 5. One-button switch is easy to operate, waterproof and shockproof structure is stable, and it is a high-reliability signal alarm device specially designed for fishing enthusiasts. Package includes:1pc Reservoir fishing alarm