Feature: 1. Stretchable monocular, 10‑30 times adjustable magnification range, field of view can be zoomed in and out. 2. Support stretching zoom and rotating zoom, anti‑slip and waterproof, convenient to use. 3. 0.5m‑3000m observation range, support near and far view, giving you a different experience. 4. Adopts BAK4 transparent prism with premium optical performance, high transmittance, round spot exit pupil, clear and bright. 5. Pocket mini monocular telescope, small and exquisite, lightweight and portable, easy to carry around. 6. The shape can be stretched freely, the design is fun and interesting, so many telescope enthusiasts can't put it down. 7. Pure metal frame, long‑lasting special structure design, elegant appearance, brings more technological sense and fashion sense. Specification: Item Type: Monocular Telescope Material: Aluminium AlloyModel: 10-30x25Size: Approx. 192 x 32mm/7.6 x 1.3in(Stretch State) Unstretched Length: Approx. 117mm/4.6in Telescope Magnification: 10X -30X, between 10X and 30X can be adjusted as needed (the standard magnification is true magnification)Eyepiece Diameter: Approx. 10mm/0.4in Objective Lens Inner Diameter: Approx. 25mm/0.98in Objective Lens Outer Diameter: Approx. 33mm/1.3in Prism Category: Bk4 Coating: Multi-Layer Broadband Green FilmField of View: 10 times: 3.5°, 30 times: 2.0°Focusing Method: Stretching or Rotating Zooming (2 methods)Function Parameter: Anti-Slip Technology: Support Waterproof Technology: Not Supported Folding Technology: Support Zoom Function: Support Temperature (℃): Normal Temperature 20℃-25℃ Humidity: ＜65% Tripod Interface: Support . Package List: 1 x Telescope 1 x Lens Wiping Cloth2 x Lens Cover1 x Strap1 x Telescope Bag1 x Manual