where to buy a prism

{"title":"12x50 HD Hunting Durable Bird Watching Telescope BAK4 Prism FMC For Adults","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/ef\/a9\/8e6730da8ba5559426ed83825d16-200x200-1.jpg","attrs":{"Price":"negotiable","Brand Name":"CTWR","Model Number":"ymt19","Minimum Order Quantity":"10pcs","Delivery Time":"5-8 work days","Certification":"CE,FCC,ROHS","Place of Origin":"China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"10000pcs\/month","Packaging Details":"can be customized","Magnification":"12x","Objective lens":"50mm","Eyepiece lens":"23mm","Exit pupil dia":"4.4mm","Exit pupil dis":"10.26mm","Field of view":"258ft\/1000yards","Coating":"FMC","Prism":"Bak4"}}