lightweight binoculars for bird watching

{"cid":"91199509","title":"Large Eyepieces 8x42 HD Binoculars Telescope Lightweight For Adults Bird Watching","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/3d\/5e\/dcd544aff2d64476df62495768af-200x200-1.jpg","attrs":{"Price":"Negociation","Brand Name":"OEM\/ODM","Model Number":"YBR20","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":"8x42 binocular","Power":"8x","Obi,lens dia":"42mm","exit pupil diameter":"5.25mm","Eye-Relief":"21.5mm","Prism":"BAK4","Field of View":"6.3\u00b0","Coating":"FMC"}}

{"cid":"91212602","title":"Green Portable Thermal Hunting Binoculars For Bird Watching High Resolution","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/ca\/83\/dfd516064e1d4918c403bd90e3a7-200x200-1.jpg","attrs":{"Brand Name":"OEM\/ODM","Model Number":"RE45","Certification":"CE,FC,ROHS,EMC,ISO9001","Place of Origin":"CHINA","Type":"RE45 Thermal Hunting Binoculars","Field angle":"17\u00b0 x 13\u00b0","Optical zoom":"4x","Battery continuous working hours":">6h","Weight":"< 500g","Rangefinder":"Yes","Operating temperature":"-20\u2103 -+60\u2103","Size":"175mm X 88mm X 50mm"}}

{"cid":"91220963","title":"C 8X Magnification 42mm Caliber High Definition Monocular Termico Birding Watching Shooting Long Rnage Telescope Binoculars","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/8d\/8e\/76560e8075175e67fd90914677dc-200x200-1.jpg","attrs":{"Price":"CN\u00a5216.90\/pieces 1-9 pieces","Brand Name":"kaemeasu","Model Number":"KM-TC0842","Place of Origin":"China","Type":"optical scope","Maximum Output Power":"0","Material":"ABS+PC","Weight":"560g","Magnification":"8X","Application":"training, SPORTS, Tactical, Hunting, outdoor activity, Fishing, Camping, TELESCOPE, Outdoor sports, bird watching, Travel, Hiking, long range shooting, Safety, Concert, CS, gun mount, 25 meters target, ASTRONOMY, 20mm rail, long range precise shooting, war","Feature":"LONG RANGE, HD, HIGH QUALITY, PROFESSIONAL","Lens Coating":"multi-coated","Field of View":"6\u00b0","Objective Lens Diameter":"42mm","Mount Base Type":"Tripod Mount","Performance Level":"high","certificate":"CE, ROHS","Exit pupil diameter":"4.2mm","Exit pupil distance":"16.5mm","Color":"green\/black"}}