The Nash Siren Night Glo Swing Arm is a visual bite indicator designed to pair with the Siren R4 alarm. Using an MMCX bayonet push and twist connection for an LED output from the R4, the swing arm produces a unique pulsing illumination whenever the alarm’s Night Glo function is enabled and the alarm LED lights. It offers a complete indication system, allowing instant changes between traditional swing arm operation and the sprung tension system made famous on the Wasp indicator. A twist and lock control dial provides four settings, selecting the tension between variable drag weight loading only, plus additional settings 1-3 that dial in progressively more spring loaded tension. This enables effective registration of drop backs and improved contact with end tackles at extreme range. The Night Glo range is described as the slickest visual indicators yet from Nash, complementing the performance of the Siren R4 alarms. - Variable drag weight Swing Arm operation - 3 additional settings for spring loaded tension - Full range of matching coloured heads with a pulsing glow to replicate R4 LED colours plus a black head option with white LED - Magnetic quick release hockey stick attachment - Push and twist power cable attachment to R4 output socket - Unique magnetic gate line clip guaranteed to release only when the rod is lifted