SVBONY SV191 Zoom Eyepiece 7.2-21.6mm 1.25 Inch Ultra Wide Angle FMC Coating 7 Element Structure for Telescope

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. SV191 ultra wide angle 1.25" 7.2mm-21.6mm zoom eyepiece adopts high refractive glass, allowing you to change magnification without changing the eyepiece 7-element/4-group lens configuration provides clear, high-contrast perspective Fully coated with anti-reflective coating, the edges of the lens have a matte coating to effectively prevent reflective lines. Achieves maximum contrast and ensures excellent optical performance Extra-long 18mm to 20mm eye relief range allows you to use glasses without reducing the field of view seen through the eyepiece SV191 series zoom eyepiece supports pluggable SV406P series bird watching field scope for perfect focus Ultra wide angle and convenient to use Made of high refractive index glass, magnification can be changed without changing the eyepiece. SV191 eyepiece belongs to wide-angle zoom eyepiece type. Maximum performance field of view is 65 degrees. QUALITY IMAGES 7-element/4-group lens configuration provides sharp, high-contrast perspective Excellent optical performance Fully coated, with matte coating on the edges of the lens to create a reflective line effect to prevent. Can achieve maximum contrast, ensuring excellent optical performance Humanized design Ultra-long 18mm-20mm eye relief range not only meets the needs of glasses-wearing users, but also has an excessively long exit pupil distance It also avoids the visual ghosting problem caused by Specifications: 1. Brand: SVBONY 2. Model: SV191 3. Focal length: 7.2-21.6mm 4. Eye relief: 18-20mm 5. Apparent field of view: 42°-65° 6. Field stop diameter: 16mm 7. Barrel size: 1.25" 8. Lens structure: 7 pieces/4 pairs 9. Filter thread standard: M28.5*0.6 10. Coating: FMC 11. Blackened lens edge: Yes 12. Eye cup: Twist up 13. Eye cup material: Metal 14. Net weight: 167g/ 5.87oz / 0.367lb Package Contents: 1x SV191 1.25" Zoom Eyepiece 7.2-21.6mm 2x Rubber Dust Cover 1x Mirror Cloth