bak4 20x50 binoculars for astronomy

{"cid":"91199509","title":"Adults Marine Military 20x50 Binoculars Waterproof With Rangefinder Compass BAK4 Prism FMC Lens","imgUrl":"https:\/\/img.chinax.com\/nimg\/b2\/76\/12c04ca27021feb5722db1a0b73d-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Tontube","Model Number":"KBPC4R 7X50","Minimum Order Quantity":"1","Delivery Time":"10-12 days","Certification":"CE FCC ROHS","Place of Origin":"Sichuan, China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"1,000,000 pcs\/month","Packaging Details":"- Waterproof Binocular - Carrying bag - Cleaning Cloth - Neck Strap - Operational manual - Eyecups for eyepiece and objective lens - Tripod and phone holder (charge optional) - Gift cards (charge optional)","Product name":"High Power Military Binoculars","Magnification":"7X Optical Magnification","Objective diameter":"50mm","Field of view":"132m","Eye Relief":"23mm","Coating":"FMC","Eyecup Type":"Rubber fold-down eyecup","Waterproof Rain-proof":"IPX7","Near Focus":"7 m","Prism Material":"BAK4","FIELD ANGLE":"7.5\u00b0 \u00b1 5%"}}