3. F4.0 Large Aperture: Multi layer coating technology enhances light transmittance and image clarity. With a 78mm main mirror and F4.0 aperture, it improves observation in low light conditions for detailed visibility.
4. Humanized Operating: Spotter scope supports ±4 diopter adjustment, suitable for nearsightedness or farsightedness users. Clear observation without wearing glasses. Accurate manual focus control for convenience and accuracy in observation.
5. For Outdoor Exploration: Built in 4500mAh rechargeable battery for long time use. Memory card supports up to 512GB (Class 10 or above, excluded), data can be exported to a computer via USB. Suitable for astronomy enthusiasts and educational purposes.

Specification:
Item Type: Spotting Scope
Material: Plastic, Optical Glass
Video Resolution: 4K 1.5°x0.9° (maximum)
Focus Mode: Manual
Eyepiece: Adjustable Vision​​ Compensation (Diopter Adjustment Range of +/-4, for Both Myopia or Hyperopia Compensation up to 400)
Aperture: F4.0
Focal​​ Length: 300mm
Main Lens Diameter: 78mm / 3.1in
Limit Magnitude: 11
Digital Zoom: 18x
Storage Media: Memory Card (Support up to 512GB, Recommend Using Class 10 or above) (Not Included)
Auto Power Off: 1 Minute, 3 Minutes, 5 Minutes, 10 Minutes Off
Power Type: Built in 4500mAh Lithium Ion Battery, Rechargeable

How to Use:
Install and use

Package List:
1 x Spotting Scope
1 x Instruction Manual
2 x Cleaning Cloth
1 x Tripod
1 x Sunshade
1 x Charging Cable