Check the listing for details. Fox MK2 Illuminated Swingers Bite Indicator Hanging Bite Indicator. Color: Red, Condition: New. Listed at 67.98 USD. Fox MK2 Illuminated Swingers Bite Alarm Fox MK2 Illuminated Swingers Bite Alarm High quality bite alarm. Item no.: FX-MK2 Product Description New matt black anodizing on swinger arms and weights Light up when connected to a bite alarm with a power output Head flashes simultaneously with a Micron LED for optimal drop bite indication Streamlined adapters for mounting under the Micron Rubber buffers on the back of the swingers Widened front for better visibility Spring pressure system Fixed line guide clip Sliding 80gr weight Light-reactive acrylic bite alarm heads Betalight slot Swinger boxes are also available separately without contents Number per pack: 1 Part type: Bite alarms Product type: Bite alarms Manufacturer: Fox Product: MK2 Illuminated Swingers Type of fishing: Freshwater fishing.