twist up eyecup monocular telescope

{"cid":"91199509","title":"16x52 Monocular Dual Focus Optical Zoom Mobile Phone Telescope With Twist Up Eyecups","imgUrl":"https:\/\/img.chinax.com\/nimg\/de\/c7\/6f631282a40c1fd5a04066a1f45f-200x200-1.jpg","attrs":{"Price":"Negociation","Brand Name":"OEM\/ODM","Model Number":"YM04","Minimum Order Quantity":"1 PCS","Delivery Time":"3-30 days","Certification":"CE FCC ROHS","Place of Origin":"Sichuan, China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram, Paypal","Supply Ability":"30000 PCS per month","Packaging Details":"Custom","Product name":"16x52 Monocular","Power":"10","Obi,lens dia":"42mm","exit pupil diameter":"4.45mm","Eye-Relief":"12.8mm","Prism":"BAK4","Field of View":"5.6\u00b0","Coating":"FMC"}}