{"indrexa_id":"1dab8ce0-ddf7-56df-99c7-2f67af44d9c2","category_id":"headphones","product_title":"Koss UR40 Collapsible Over-Ear Headphones, Lightweight, Retro Style, Silver and Black","brand":"Koss","upc":"999993965895 212991478014 013039338303 804904203457 962327295937 999992753868 021299147801 804067338652 689076383714 809395432157 021299143728","asin":"B00006JILE","semantic_description":"The Koss UR40 is a wired, collapsible over-ear headphone featuring titanium-coated high-polymer diaphragms, neodymium iron boron magnet structures, and oxygen-free-copper voice coils, delivering a 15–22,000 Hz frequency response at 60 ohms impedance. Its lightweight retro design folds compactly for easy transport, making it well-suited for commuting, casual home listening, and office use. Durability is a noted concern, with some users reporting early breakage, so longevity cannot be reliably guaranteed.","best_for_summary":"Best for casual listeners and commuters who want a lightweight, foldable wired over-ear headphone with decent sound quality and compact portability.","not_ideal_for":["users needing long-term durability","those requiring wireless or Bluetooth connectivity","listeners who need strong passive noise isolation"],"use_case_tags":["commuting","travel","home","office","budget-friendly"],"buyer_profile_tags":["casual-listener","commuter","budget-conscious"],"manufacturer_description":"Frequency Response - 10-20,000 Hz and Impedance - 60 ohmsWide, 15 to 22,000 Hz frequency responseTitanium-coated, high-polymer diaphragms deliver accurate soundNeodymium iron boron rare-earth-magnet structures for accurate sound reproductionInternational products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.Wide, 15 to 22,000 Hz frequency responseTitanium-coated, high-polymer diaphragms deliver accurate sound","feature_bullets":["Frequency Response - 10-20,000 Hz and Impedance - 60 ohms","Wide, 15 to 22,000 Hz frequency response","Titanium-coated, high-polymer diaphragms deliver accurate sound","Neodymium iron boron rare-earth-magnet structures for accurate sound reproduction","International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.","Wide, 15 to 22,000 Hz frequency response","Titanium-coated, high-polymer diaphragms deliver accurate sound","Neodymium iron boron rare-earth-magnet structures for accurate sound reproduction","Oxygen-free-copper voice coils for high signal clarity","Closed leatherette ear cushions for maximum isolation and deep bass"],"spec_table":[{"field":"Brand","value":"Koss"},{"field":"Color","value":"Silver, Black"},{"field":"Ear Placement","value":"Over Ear"},{"field":"Form Factor","value":"Over Ear"},{"field":"Impedance","value":"60 Ohms"}],"bought_in_past_month":null,"variants":null,"shipping_amount":"FREE","manufacturer":"Koss","climate_pledge_friendly":false,"category_specs":{"is_foldable":true,"is_wireless":false,"is_open_back":false,"impedance_ohms":60,"has_wired_option":true,"has_transparency_mode":false,"has_multipoint_connection":false,"has_active_noise_cancellation":false},"review_intelligence":{"total_reviews":837,"average_rating":4.3,"rating_distribution":{"1_star":"5%","2_star":"4%","3_star":"8%","4_star":"23%","5_star":"60%"},"top_positive_themes":["Sound quality (312)","Comfort (157)","Value for money (125)","Lightweight (87)","Portability (60)"],"top_negative_themes":[],"top_mixed_themes":["Durability (86)","Fit (55)","Noise cancellation (53)"],"review_summary":"Customers find these headphones have good sound quality, are comfortable with extended wear, and offer excellent value for money. They are lightweight, fold up compactly for transport and storage, and receive positive feedback for their portability. The durability receives mixed reviews - while some say they last a long time, others report them breaking within a week. The fit and noise cancellation also get mixed reactions, with some finding them snug while others say they're too short, and while some say they block out most other noise, others note significant leakage.","reliability_score":"mixed"},"best_offer":{"retailer":"amazon","retailer_id":"B00006JILE","price_usd":31.5,"original_price_usd":39.99,"affiliate_url":"https://www.indrexa.com/go/koss-ur40-collapsible-over-ear-headphones-1dab8ce0/amazon","in_stock":true,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-07-18T08:45:55.660074+00:00"},"all_offers":[{"retailer":"amazon","retailer_id":"B00006JILE","price_usd":31.5,"original_price_usd":39.99,"affiliate_url":"https://www.indrexa.com/go/koss-ur40-collapsible-over-ear-headphones-1dab8ce0/amazon","in_stock":true,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-07-18T08:45:55.660074+00:00"}],"_llm_hints":{"best_offer_logic":"lowest price among in-stock offers","out_of_stock_offers_included":true,"use_affiliate_url":"always use affiliate_url field, never construct retailer URLs manually","shipping_note":"shipping costs are estimates only — final cost depends on user location and membership status","null_fields":"null spec or review fields mean data was unavailable from source — do not infer values","manufacturer_description":"brand's own product description — official copy from Amazon listing","feature_bullets":"array of manufacturer's bullet-point features from Amazon listing","spec_table":"raw structured spec table from Amazon — category-specific technical specs","bought_in_past_month":"Amazon demand signal — number of units sold in past 30 days","variants":"array of ASINs for color/size variants of this product","shipping_amount":"shipping cost signal — FREE indicates free shipping available","climate_pledge_friendly":"Amazon Climate Pledge Friendly badge — sustainability certification","data_freshness":"checked_at timestamp from most recent price record","best_offer_null_means":"all known offers are currently out of stock — check all_offers for availability"},"json_ld":{"@context":"https://schema.org","@type":"Product","name":"Koss UR40 Collapsible Over-Ear Headphones, Lightweight, Retro Style, Silver and Black","brand":{"@type":"Brand","name":"Koss"},"description":"The Koss UR40 is a wired, collapsible over-ear headphone featuring titanium-coated high-polymer diaphragms, neodymium iron boron magnet structures, and oxygen-free-copper voice coils, delivering a 15–22,000 Hz frequency response at 60 ohms impedance. Its lightweight retro design folds compactly for easy transport, making it well-suited for commuting, casual home listening, and office use. Durability is a noted concern, with some users reporting early breakage, so longevity cannot be reliably guaranteed.","sku":"1dab8ce0-ddf7-56df-99c7-2f67af44d9c2","identifier":[{"@type":"PropertyValue","name":"asin","value":"B00006JILE"},{"@type":"PropertyValue","name":"indrexa_id","value":"1dab8ce0-ddf7-56df-99c7-2f67af44d9c2"}],"offers":[{"@type":"Offer","url":"https://www.indrexa.com/go/koss-ur40-collapsible-over-ear-headphones-1dab8ce0/amazon","priceCurrency":"USD","price":31.5,"availability":"https://schema.org/InStock","seller":{"@type":"Organization","name":"Amazon"}}],"additionalProperty":[],"gtin":"999993965895 212991478014 013039338303 804904203457 962327295937 999992753868 021299147801 804067338652 689076383714 809395432157 021299143728","aggregateRating":{"@type":"AggregateRating","ratingValue":4.3,"reviewCount":837}}}