Steiner Military LRF 8x30 Binoculars, w/Laser Rangefinder Floating Prism System: uses a flexible silicon lens mount to absorb severe shock, impact and abuse without damage Sports-Auto-Focus System: lets you focus each eyepiece to your vision once, then keeps images razor-sharp from 20 yards to infinity gets NBR Rubber Armoring" durable, slip-proof and noiseless to ensure a secure, chassis-protecting grip in all conditions Makrolon Housing: durable polycarbonate with NBR Long Life rubber armoring, withstands 40 Gas of impact Impervious to harsh conditions Ergonomic Design: shifts the center of gravity into palms for long-time observation, round-shoulder shape won't hang up on hatches and doors