{"product_id":"refurbished-sony-wh-ch520-wireless-noise-canceling-headphones","title":"Sony WH-CH520 Wireless Noise Canceling Headphones (Refurbished)","description":"\u003cdiv\u003e\n\u003ch3\u003eSony WH-CH520 Wireless Headphones – Long-Horizon Battery Media Headset\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eEstablish an uncompromised personal audio pipeline and maximize study concentration focus across high-density campus environments with the exceptionally long-lasting, ergonomic architecture of the Sony WH-CH520 Headphones.\u003c\/strong\u003e Sourced under advanced commercial audio manufacturing parameters, this premium wireless auditory headset serves as an uncompromised structural foundational asset for university study cubicles, school district testing laboratories, and hybrid remote learning configurations. Operating over an advanced digital data processing core, this reliable hardware peripheral delivers immediate wireless signal initialization, automated multi-device pairing handshakes, and a highly stable audio streaming track straight out of your transit shoulder bag. This specialized personal sound solution completely eliminates the distracting ambient room noise, messy wire tangles trapping user movements, and complicated connection setups traditionally associated with low-tier consumer gear. This means your institutional technology procurement teams and library facility directors can completely bypass acoustic layout limitations, reduce localized user fatigue bottlenecks, and establish an immediate, high-focus learning environment long before your upcoming testing cycle begins.\u003c\/p\u003e\n\u003cp\u003eAuditory document presentation precision, crisp vocal lecture articulation, and long-range signal tracking performance are driven by a high-efficiency hardware core, focusing on a \u003cstrong\u003epremium high-output dynamic transducer matrix, a hardwired Digital Sound Enhancement Engine (DSEE) upscale circuit, an exceptional internal energy deployment grid delivering up to 50 hours of continuous audio playback, and a lightweight adjustable mechanical frame structure\u003c\/strong\u003e. This synchronized internal sound system allows student researchers, educators, and technical operators to process detailed language translation software, navigate active multimedia training modules, and transition fluidly between a personal laptop, computing tower, or mobile tablet device simultaneously with absolute structural composure. The internal engine integrates an advanced low-energy wireless data bandwidth channel paired with an ultra-responsive USB Type-C fast-charging infrastructure. This makes it effortless for technical administrators to maintain uncompromised deployment longevity, eliminate out-of-pocket battery replacement overhead, and maintain reliable multi-user fleet configurations without encountering unexpected device dropouts or communication lag on the floor.\u003c\/p\u003e\n\u003cp\u003eThe Sony low-profile unified structural frame secures its position as a high-value long-term capital procurement asset because of its \u003cstrong\u003eergonomic cushioned headband architecture, highly durable composite swivel joints, and driverless multi-platform peripheral cross-compatibility\u003c\/strong\u003e. Corporate infrastructure directors and academic procurement officers rely on this headset's long-lifecycle soft earpads, rugged scratch-resistant outer shell casing, and rapid manual touch adjustments to insulate tight technology budgets from unexpected maintenance replacement overhead and protect long-term capital investments. The compact enclosure integrates dedicated high-visibility hardware adjustment control keys, a localized built-in high-quality microphone featuring clear voice capture tracking, and an advanced hands-free calling infrastructure, allowing management to verify absolute peripheral tool utility across all workstation setups while maintaining low procurement overhead. On the outside, your long-term physical hardware asset is protected by an \u003cstrong\u003eadvanced structural chassis protective shielding matrix and a professional scratch-resistant matte finish styling layout\u003c\/strong\u003e, providing complete component longevity from the core acoustic driver layer up.\u003c\/p\u003e\n\u003cstrong\u003eFeatures include:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e🔋 Massive 50-Hour Extended Power Canopy:\u003c\/strong\u003e Flagship internal rechargeable battery design engineered to sustain intensive study workflows for days on a single charge, featuring a lightning-fast 3-minute quick-charge path that yields up to 1.5 extra hours of immediate uptime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e🧠 Digital Sound Enhancement Engine (DSEE):\u003c\/strong\u003e Advanced internal hardware processing layer engineered to upscale compressed digital audio files, restoring lost high-frequency elements for clear vocal and lecture crispness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e🌐 Zero-Latency Multi-Point Wireless Bluetooth:\u003c\/strong\u003e Standardized low-energy multi-platform signal channel calibrated to easily switch, pair, and stream audio across two independent hardware nodes concurrently without dropping connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e🪶 Ultra-Lightweight Swivel Ergonomic Frame:\u003c\/strong\u003e Space-saving polymer chassis built with swiveling earcups and adjustable padded headbands to minimize user clamping fatigue and facilitate compact transit storage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e🎙️ Crystal-Clear Hands-Free Voice Capture:\u003c\/strong\u003e Integrated premium hardware microphone layout utilizing high-fidelity voice processing to optimize speech clarity, minimize room echo, and elevate vocal tracks during remote conferences.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e🔧 Universal Workspace Cross-Compatibility:\u003c\/strong\u003e Standardized multi-platform Bluetooth wireless link engineered to route audio signals flawlessly between smartphones, corporate computer towers, and portable mobile laptops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eOriginal Specifications:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: sans-serif; text-align: left; margin: 20px 0px; border: 1px solid rgb(221, 221, 221); height: 372.4px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: rgb(248, 249, 250); border-bottom: 2px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003cth style=\"padding: 12px; font-weight: bold; width: 35%; border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding: 12px; height: 19.6px;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003eSony\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003eModel \/ Part Identifier\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003eWH-CH520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003eDevice Classification\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003eWireless On-Ear Headphones Personal Audio System Node\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003eWireless Connectivity Matrix\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003eBluetooth Wireless Technology (Version 5.2) with Zero-Latency Multi-Point Device Synchronization Support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003eAudio Processing System\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003eSony Digital Sound Enhancement Engine (DSEE) upscale architecture with custom equalizer tuning options via the Sony Headphones Connect application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003eAcoustic Transducer Platform\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003e30 mm High-Output Dynamic Sound Driver Matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003eFrequency Response Range\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003e20 Hz to 20 kHz (44.1 kHz sampling) Dynamic Acoustic Range Mapping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003ePower Cell Prerequisites\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003eInternal Rechargeable Lithium-Ion Battery Cell \/ Up to 50 Hours continuous playback \/ USB Type-C physical fast-charging terminal link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003ePhysical Size Geometry\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003eCompact on-ear adjustable headwear profile featuring dynamic swivel design mechanics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003eNet Product Mass\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003e0.32 lbs (147 Grams ultra-lightweight structural composite frame layout optimized to drop user fatigue)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003e\n\u003ctd style=\"padding: 12px; font-weight: bold; background-color: rgb(253, 253, 253); border-right: 1px solid rgb(221, 221, 221); height: 19.6px;\"\u003eCompliance Vetting\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; height: 19.6px;\"\u003eRoHS Material Compliant \/ CE Standard Safety Certified Matrix \/ FCC Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003e💡 PRO TIP #1: UNLEASH SECURE POWER VELOCITY VIA PREMIUM RECHARGEABLE WALL INTERFACES! 💡\u003c\/strong\u003e\u003cbr\u003eWhile this high-efficiency wireless headset integrates an advanced internal energy management system, our mandatory retail package box audit reveals that the manufacturer leaves the physical wall terminal block out of the box, supplying only a loose USB Type-C charging wire thread. To protect your hardware power cell health from voltage pacing limits and support rapid charging turnaround targets, we highly recommend matching your headphone rollout checkout with a \u003cstrong\u003e\u003ca href=\"https:\/\/thinkedu.com\/collections\/hardware-batteries-chargers-wall-chargers\"\u003ePremium USB-C Wall Charger Adapter\u003c\/a\u003e\u003c\/strong\u003e. Supplying dedicated, high-shielded external charging blocks completely eliminates electrical synchronization drops, prevents device battery overheating, and guarantees continuous presentation availability with complete hardware platform system efficiency.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003ePlease Note:\u003c\/strong\u003e These Sony WH-CH520 Wireless Noise Canceling Headphones have been professionally restored by certified technicians. Prior to shipment, the devices undergo extensive inspection and testing in order to guarantee proper working condition and customer satisfaction. Tested for Kye Functions, R2\/Ready for Resale. \u003cstrong\u003e1 Year Limited Warranty Against Defects\u003c\/strong\u003e (does not include accidental damage)\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eCondition Descriptions:\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium:\u003c\/strong\u003e Cosmetic condition is like new. Comes in generic white box. Contains same accessories included with original device. Battery health is \u0026gt;80%.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent:\u003c\/strong\u003e Cosmetic condition is excellent; may show light signs of wear, including hairline scratches and\/or other subtle imperfections. Comes in OEM box which may show signs of wear. Contains same accessories included with original device. Battery health is \u0026gt;80%.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFair:\u003c\/strong\u003e Cosmetic condition is fair; heavier signs of wear, including scratches and\/or other subtle imperfections. Comes in OEM box which may show signs of wear. Contains same accessories included with original device. Battery health is \u0026gt;70%.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Texas Depot","offers":[{"title":"Excellent \/ Black","offer_id":51921046536478,"sku":"WHCH520B-ER","price":45.0,"currency_code":"USD","in_stock":true},{"title":"Excellent \/ Pink","offer_id":51921046569246,"sku":"WHCH520P-ER","price":45.0,"currency_code":"USD","in_stock":true},{"title":"Excellent \/ White","offer_id":51921046602014,"sku":"WHCH520W-ER","price":45.0,"currency_code":"USD","in_stock":true},{"title":"Fair \/ Black","offer_id":51921046634782,"sku":"WHCH520B-C","price":40.0,"currency_code":"USD","in_stock":false},{"title":"Fair \/ White","offer_id":51921046667550,"sku":"WHCH520W-C","price":40.0,"currency_code":"USD","in_stock":false},{"title":"Premium \/ Black","offer_id":51921046700318,"sku":"WHCH520B-T","price":50.0,"currency_code":"USD","in_stock":true},{"title":"Premium \/ Pink","offer_id":51921046733086,"sku":"WHCH520P-T","price":50.0,"currency_code":"USD","in_stock":true},{"title":"Premium \/ White","offer_id":51921046765854,"sku":"WHCH520W-T","price":50.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/4435\/9966\/files\/WHCH520P-ER_1c.jpg?v=1780483681","url":"https:\/\/thinkedu.com\/products\/refurbished-sony-wh-ch520-wireless-noise-canceling-headphones","provider":"ThinkEDU","version":"1.0","type":"link"}