The slickest visual indicators yet from Nash, the Night Glo range offer the perfect complement to the performance of the Siren R4 alarms. Using an MMCX bayonet push and twist connection for an LED output from an R4, when the alarm’s Night Glo function is enabled Night Glo Bobbins offer a unique pulsing illumination whenever the alarm LED lights. Enlarged ball clip attachment for free line movement Secondary grip clip attachment for slack lining Flexible rubberised 10cm cable Full range of matching coloured heads with pulsing glow that replicate R4 LED colours, plus a black head option with white LED Small Bobbin weight 8grLarge Bobbin weight 15grBoth Bobbin sizes supplied with 2 x 5gr additional drag weights