Great fishing tool during night fishing or in weak light environment. Features: Built-in LED light will flash when fish swallows bite. Reliable head with bolt to hold the line so as to improve sensitivity of bite and loop line. Movable metal counter weight with fixed screw for different fishing demands. 2.5mm plug to plug in your fishing alarm(not included). 2 levels of tightness adjustment. Great for night fishing or in weak light environment. Provided zipper bag,easy to store and carry. Specification: Model: JY-SW-23TS / JY-SW-23TS-6 / JY-SW-23TSB / JY-SW-23TSP (optional) Material: ABS Swinger Unit Weight:approx. 152 g / 5.4 oz Swinger Length: 28.6 cm / 11.3 in Storage Bag: 33*16*5.5cm(4pcs) / 33*22*5.5cm(6pcs) Package Weight: approx. 770 - 1190 g / 27.2 - 42.0 oz Package List: 6* Swinger 1* Storage Bag