Liberty 4 NC
True wireless in-ears with a charging case; small batteries and charging or contact problems are what make long-term data especially valuable here.
auto-translatedDesign strengths: the charging case protects the buds and recharges them several times over; ear tips are cheap standard parts in several sizes; ANC and connection stability are often improved by firmware years after purchase; many makers sell a single replacement bud.
Typical long-term risks: small lithium cells lose capacity; a single earbud stops charging because of dirty or worn contacts; the case battery or hinge ages; earwax and dust affect grilles and microphones; ANC, transparency and pairing can be degraded by firmware; sweat or water can cause damage despite an IP rating. Replacement is often more economical than repair.
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