Description: The product shall work with alarm, press the fishing line onto the roller of the alarm. The alarm will work normally no matter the fish are pulling the line outward or back. It will not illuminate when it is standby, and will flash when alarm is working. It is powered by alarm. Features: 1. Made of good quality metal, solid, durable and wear-resistant. 2. The adjustable metal ball clip can be rotated according to the fishing line, easy and convenient to use. 3. The chain joint can be rotated 270 degrees to make it more flexible. 4. Standard plug fit all type bite alarms. 5. It will illuminate when working and has four colors choice. Suitable for day and night time fishing. 6. Perfect accessories for fishing lovers. Easy to install. Specifications: Material: Metal Color: Red, Yellow, Blue, Green Plug Cable Length: Approx. 35 cm/ 13.78 inch Overall Length with Chain Connection: Approx. 35 cm/ 13.78 inch Packing List: 4 * Swinger 1 * Storage Box .