Wonderful gift for you. Features: On/off button. Adjustable tone,volume and sensitivity to meet your needs. Sound and visual alerts will enable you not to miss a bite and makes your fishing easier. Anti-slip pads inside to easily put your fishing pole on it. M3/8 fixed bolt to easily fix on buzz bar(not include). 2.5mm jack socket for external products. Suitable for day and night time fishing. Powered by a 9V battery(not included). Specification: LED Color: Blue / Green / Yellow / Red (optional) Material: ABS + Metal LED Number: 8 Battery: 1 * 9V Battery (not included) Size: 9 * 5 * 4 cm / 3.5 * 2.0 * 1.6 in Unit Weight: approx. 75.5 g / 2.7 oz Package Size: 12 * 5.3 * 4.7 cm / 4.7 * 2.1 * 1.9 in Package Weight: approx. 87.9 g / 3.1 oz Package List: 1* Bite Alarm