Phone TescopeFeatures: 1. Metal screw interface, more durable; lanyard design, easy to carry 2. Anti-skid horizontal bar design focusing hand whe, not easy to slip 3. The objective lens adopts double-sided full-broadband coating, which can be viewed in low light conditions 4. The eyepiece adopts multi-layer composite broadband green film and all-optical gl lens for more comfortable viewing 5. Small and exquisite, tescopic design, easy to carry 6. Reduce the loss of light ren, the light transmittance is 99%, and the light transmittance is improvedProduct parameters: 1. Material: ABS, metal 2. Function: zoom, scalable 3. Magnification: 10-30x 4. Objective lens diameter: 35mm 5. Eyepiece diameter: 20mm 6. Fid of view angle: 2.6-4.6 degrees 7. Fid of view range: 45.5-80.5M/1000M 8. Exit pupil diameter: 1.2-1.7mm 9. Exit pupil distance: 17-14mm 10. Nearest focal length: 3m 11. Lingjing System: BAK 412. Dimensions: 4.7 x 4.5 x 16 cm 13. Net weight of the tescope: 214 gramsPacking list:Binoculars x1Lanyard x1Carrying bag x1Mobile phone holder x1Tripod x1