1、Adjustable tone,volume and sensitivity to meet your needs. 2、Audio and visual alerts will enable you not to miss a bite and makes your fishing easier. 3、Come with a chain swinger.Built-in LED light will flash when fish swallows bite. 4、Suitable for day and night time fishing. Features: Adjustable tone,volume and sensitivity to meet your needs. Audio and visual alerts will enable you not to miss a bite and makes your fishing easier. Come with a chain swinger.Built-in LED light will flash when fish swallows bite. Suitable for day and night time fishing. Specification: LED Color: Blue / Red / Yellow / Green (optional) Package size: 15 * 7 * 5 cm / 5.9 * 2.8 * 2.0 in Package weight: approx. 145 g / 5.1 oz Fishing Bite Alarm: LED color: Blue / Red / Yellow / Green Material: ABS LED Number: 2 Sensibility: 8 levels Tone: 8 levels Volume: 8 levels Battery: 1 * 9V Battery (not included) Screw Diameter: 0.8 cm / 0.3 in Fishing Swinger: LED color: Blue / Red / Yellow / Green Material: Metal + Plastic Total length: 35 cm / 13.8 in Chain length: 22 cm / 8.6 in Unit weight: approx. 54.3 g / 1.9 oz Package List: 1* Fishing Bite Alarm 1* Fishing Swinger 1* Fishing Bite Alarm 1* Fishing Swinger