Electronics > Audio > Audio Accessories > Headphones & Earbuds > True Wireless Earbuds
M66 PRO TWS Bluetooth Earbuds with Digital Display, 40mAh
Brand: Generic / OEM
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Audited BOM: 10 Components
RMA Chain & Defect Intelligence
Root cause causal graph linking factory engineering flaws to verified consumer return reasons.
⚡ Causal Link: Defect to Consumer Return
Low-quality battery cells (ENG-001) lead to rapid degradation, resulting in significantly lower than promised battery life (RMA-003) and user complaints (REV-001, REV-005).
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