Ergonomically designed housing with a large crank arm. Parking position for the crank arm and starting ring. Sliding bearing shells for optimal winding comfort. Housing made of impact-resistant ABS with a user-friendly soft-touch surface. Additionally, the RADIUS capsule can be supplied with straps equipped with the patented FLEXTOP starting fixture, which reliably prevents breakage at the beginning of the strap. Technical specifications: Ergonomically designed capsule, quick conversion from right-handed to left-handed configuration in seconds, wear-free sliding ring bearing, parking position for starting ring, parking position for crank arm, FLEXTOP starting fixture prevents strap breakage at the beginning of the strap, user-friendly soft-touch surface.