Monoculars Telescope astronal binoculars adults high power for indoor and outdoorbr/ "specification:br/ Shell material: plasticbr/ Teles bracket material: aluminum alloybr/ Colour: Blackbr/ Magnification: 80xbr/ Prism type: BAK4br/ Prism system: roof prismbr/ Focusing system: eyepiece focusingbr/ Field of view: about 3500 m/20000 mbr/ Lens diameter: about 20 mmbr/ Objective lens diameter: about 40 mmbr/ Phone clip width:br/ Maximum: 8cmbr/ Minimum: 6cmbr/ Size: about 160x55 mmbr/ Types of:br/ One set: standard telescope + mobile phone holder + aluminum alloy teles ebr/ Group B: Telescope Standardbr/ C set: standard telescope + mobile phone holder + aluminum alloy teles bracketbr/ Package includes: according to your choicebr/ note:br/ 1. Due to the difference of light and screen, the color of the item may be slightly different from the picture.br/ 2. Due to manual measurement, please allow a difference of 0.5-2 cm.br/ "