Set - Illuminated bite indicator with a uniquely shaped body and adjustable colour of the diode (7 colours). With a sliding load, you can easily adjust the weight, including complete lightening of the indicator. The built in ball clip works reliably and safely with monofilaments and braided lines of any diameter. The indicator can be attached quickly and easily to the bankstick adapter via a sturdy bayonet clutch. SwingArm MCX88 works with a commercially available 3V CR2032 coin cell battery (not included). After inserting the battery into SwingArm, it offers a choice of seven colors and remembers the last selected color. Battery life is several months of intensive use.