Audio
For over-ear headphones, battery degradation is slower due to larger cell size — realistic lifespan is 5-8 years before meaningful capacity loss. For true wireless earbuds, expect 18-30 months to noticeable degradation regardless of brand or price. The buying decision for earbuds is therefore: which product makes best use of a two-year budget, not which will last the longest. LDAC codec support matters significantly for Android users; iOS users get AAC from any source.