Bluetooth 5.3 / 5.4
The current generations of Bluetooth, refining the 5.x baseline with lower power, better channel classification, and support for LE Audio. The wireless standard for personal-area devices in 2026.
Bluetooth 5.3 (2021) and 5.4 (2023) are incremental updates to the 5.x line.
5.3 changes
- Connection subrating. Devices can switch between low-power and full-throughput modes faster.
- Periodic advertising enhancement. Tightens timing for sensors and beacons.
- Channel classification enhancement. Better at avoiding congested 2.4 GHz channels.
5.4 changes
- Periodic Advertising with Responses (PAwR). Two-way comms for previously one-way beacons.
- Encrypted advertising. Privacy improvements for trackers.
Practical impact
Real-world Bluetooth 5.3/5.4 vs 5.0 is rarely dramatic on existing use cases — the upgrade is about enabling LE Audio (Auracast, hearing aid streaming) which needs both sides at 5.2+.
How to use Bluetooth 5.3 / 5.4 in a real comparison
The current generations of Bluetooth, refining the 5.x baseline with lower power, better channel classification, and support for LE Audio. The wireless standard for personal-area devices in 2026. In practice, this is most useful as one part of a decision rather than a standalone quality badge. Compare it alongside the workload, room, ecosystem, budget, and ownership constraints that apply to you; the strongest published figure is not automatically the best outcome for every buyer.
What to check next
On vsMars, read together so the value has product-specific context. It is especially relevant in .
Avoid the one-number trap
Manufacturers can describe the same capability under different conditions. Compare like-for-like variants, check the unit and test condition where available, and use a head-to-head page to see whether a measurable difference is material for your own use.
vsMars presents structured catalog values to make trade-offs legible. The linked product and spec pages are the right place to inspect the underlying values before buying.