Electronics > Audio > Headphones & Earbuds > Over-Ear Headphones
Sony WH-CH520 Wireless Bluetooth Headphones with Built-in Mic Black
Brand: Sony WH-CH520 Wireless Bluetooth Headphones with Built-in Mic Black
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Audited BOM: 9 Components
RMA Chain & Defect Intelligence
Root cause causal graph linking factory engineering flaws to verified consumer return reasons.
⚡ Causal Link: Defect to Consumer Return
The use of standard ABS plastic for the housing (ENG-001) is a cost-saving measure that leads to reports of headband breakage (RMA-002) and customer dissatisfaction (REV-001, REV-006).
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