Garmin Varia  RVR 315 - Cycling Lanyard / Safety Lanyard - Adapter 
This plate and lanyard allows you to create a safety strap for Varia  RVR 315 radar.  
simply remove the  screw and slide the plate in above the rubber cap and then put the screw back. 
The rubber cap is still able to seal around the charging port side, whilst leaving a very small entre and exit hole for the lanyard on the hinge side.  
Contents
- 1 x Plate 
- 1 x lanyard 
The Garmin Varia is not included