LED alarming fishing bite alarms and chain alert swingers set is great for night fishing and in weak light environment,which you do not worry about missing the hooked fishes and the rod. Features: Bite Alarm: LED alarming signals with high output speaker. Adjustable tone, volume and sensitivity to meet your needs. Audio and visual alerts will enable you not to miss a bite and make your fishing easier. Fixed bolt with adjustable screw and extra plug for the chain alert swinger. Suitable for day and night fishing. Power by a 9V batter(not included). Chain Alert Swinger: Metal head is for line tension to improve hooked sensitivity. Unscrew the head to put your glow stick(not included) as an indicator to find the fishing rod during night fishing. Easily connect with fishing alarm for easy fishing experience. Specification: Bite Alarm: Material: ABS & metal LED Color: Blue Battery: 1* 9V battery (not included) Size: 9*5*4.5cm/3.5*1.9*1.7in Unit weight: Approx. 75.1g/2.6oz Chain Alert Swinger: Color: Red/Blue/Green (optional) Material: Metal&Plastic Total length: 33cm/13.0in Chain length: 23.5cm/9.3in Unit weight: Approx. 13.9g/0.5oz Bag size:24*17*6cm/9.4*6.7*2.4in Package weight: Approx. 538.8g/19.0oz Package List: 3* Bite Alarm 3* Chain Alert Swinger 1* Storage Bag 1* Instruction