Methodology v1.0
5 change(s): 1 critical, 2 major, 2 moderate | Durability score reflects widespread reports of battery degradation, unresponsiveness, and firmware issues causing device failures within 1-2 years of ownership. Material quality compromised by design flaws (GPS/HR accuracy trade-off) and apparent quality control issues in firmware rollout. Brand reputation significantly damaged by: (1) recurring critical firmware bugs, (2) inability to rollback problematic updates, (3) long-standing unresolved hardware design issues, (4) user reports of deteriorating reliability post-Google acquisition, (5) lack of official transparency on known issues. Some users report good early experience that degraded over time, suggesting potential planned obsolescence pattern.