characteristic: 10-30X50 ADJUSTABLE MAGNIFICATIONTo see 10X to 30X closer with a clear and bright image with the generous, light-gathering 50mm objective wide lens. 10-30X Zoom Monocular has the best view in your outdoor adventures, Your Eyes Will Not Be Easy To Get Tired WITH STRUDY TRIPOD & PHONE ADAPTEREquipped phone Holder and Stable tripod, you can easily take clearer and shakeless images and share them with your friends or families. Suitable for all kinds of iPhone and Android such as Samsung, Sony, Google, LG, Motorola, HTC, etc. IDEAL FOR OUTDOORMonoculars specially designed for outdoor enthusiasts. It is suitable for a variety of outdoor sports: hunting, observing animals, mountaineering, camping, travel, hiking, water sports, ball games, watching scenery, driving, concert, monitoring, outdoor exploration and other activities. Give you an amazing visual experience! PACKAGE ACCESSORIES INCLUDES1 x HD Monocular Telescope, 1 x Phone Holder, 1 x Tripod PROFESSIONAL QUALITY ASSURANCEAnti-Slip Finish Rubber And Twist-up Eyes Cups Are Made Of User - Friendly Materials, Which Make This Monocular Durable, Special and Attractive. Specifications: Instrument magnification: 10-30X Exit pupil distance: 17-14.5 Outlet pupil diameter: 6.1-2.2 Field of view: 4.9-2.7 Eyepiece diameter: 23mm Objective lens diameter: 50mm Prism: BAK4 Coating: FMC Dimensions: 18.5 * 6.3 * 4.5 cm/7.28 * 2.48 * 1.77 inch (approximately)