Smart watches and fitness bracelets with Bluetooth v5.4

Bluetooth v5.4

— the latest low-energy Bluetooth version is optimized for long battery life and stable connection amidst city and gym interference. The watch reconnects faster after leaving a room, holds BT calls more reliably, and transmits sensor telemetry more evenly, with notifications arriving steadily and not in bursts. Compared to versions 5.0–5.2, the advantages are often practical rather than "wow": fewer background lags and more accurate proximity detection to the phone. If the hardware platform and software support it, watches with 5.4 integrate better with multiple BT accessories and support functions from the LE ecosystem (including broadcasts like Auracast), remaining fully compatible with older smartphones. In real terms, this means more predictable notification performance, lag-free music player control, and an economical constant "link" during a run or in the office.