The Swarovski FRR Binoculars Forehead Rest EL Range is 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. Select the variant FRR-32 for the EL Range 32 models, and the variant FRR-42 for the EL Range TA 42 models.