The FRR forehead rest EL Range is available as an accessory for your EL Range binoculars. It provides a stable three-point support to ensure maximum stability and comfort when observing for extended periods. The forehead rest can be adjusted so that your gaze is lined up perfectly. It is mounted on the battery cover. Swarovski Optik Swarovski EL Range TA 42 FRR-42 Forehead Rest 49157