Electronics > Audio > Headphones & Earbuds > True Wireless Earbuds
M90 PRO KA-799 Digital Display Bluetooth Earbuds
Brand: Generic / OEM
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Audited BOM: 12 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 low-quality Bluetooth module (COMP-006) is the root cause of connection instability (ENG-001), leading to RMAs (RMA-005) and user complaints (REV-003).
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