Monocular zoom 8-40x40 telescope $ 24.06 Objective lens diameter: 40mm Eyepiece diameter: 21mm Lens coating: FMC Broadband Green Film Prism material: BAK4 Exit pupil distance: 12.5-9mm Focusing method: objective lens rotating and focusing Exit pupil diameter: 3.1-1.5mm Tripod interface: support video camera Product material: ABS plastic steel material Product color: black Product size: 1 55x50mm
