The MK2 Illuminated Swinger from FOX now has a new black finish. Illuminates when connected to power off alarms. Main display mimics Micron LED to signal relapse. Streamlined Micron Attachment Tabs. Rubber shock absorbers on the underside of the head. Widened front for better visibility. Spring loaded adjustable tensioning system. Landline gate system. 80g sliding collar weight. Light reactive acrylic indicator head. Available in different colours.