This compact but powerful monocular can also be used for the macro study of wildlife etc. in the field. It is equally useful for specialist interests such as close observation of paintings in an art gallery. It can also be used by the visually impaired to read such items as timetables, price tickets or other notices. Specification: Magnification 8x-25x . Field 4° @ x8. 30cm close focus. BK-7 Prisms. Multi-coated optics with high transmission coating. Exit Pupil: 3.1-1mm. Eye Relief: 13.9-10mm. Rubber Fold Down Eyecup. Anti-friction non-slip rubber armoured body. Includes lanyard and soft pouch with belt loop. Length when closed 122mm. Weight 125gms.