Best Buy: Swarovski Binoculars Eyepiece 2x Doubler 49240
Swarovski Binocular Booster for EL & SLC - Swarovski - Sale Items - Mortimers of Speyside
Swaro Booster Review
Amazon.com : Swarovski 10x42 EL Range Binocular with Tracking Assistant + Forehead Rest for EL-Binoculars with Tracking Assistant + BSP Bino Suspender Pro + Flashlight + 6FT Tripod + Binocular Tripod Adapter : Electronics