Most smart tags use Bluetooth LE (often listed as Bluetooth 5.4 LE) for close-range tracking. Some models also support ultra-wideband (UWB) for precision locating. For finding beyond Bluetooth range, tags may participate in device-finder networks or use cloud/app-assisted methods that leverage Wi‑Fi, cellular or GPS signals and other devices on the network.
Smart tags use three common power approaches: built-in rechargeable batteries (many list multi-month runtimes—examples often show ~8–12 months per charge), user-replaceable coin cells (commonly CR2032, often lasting around a year), and non-replaceable long-life batteries rated for multiple years. Actual battery life varies by model and usage (speaker, location checks, and network activity).
Water-resistance varies by model. Some smart tags list IP66 protection, while others list IP67 (splash/water and dust resistance). Check the specific tag's IP rating to confirm how much protection it provides for your planned use.
Advertised ranges vary by model: many list roughly 10–20 meters (indoor) and 20–50 meters (outdoor), while some advertise ranges up to about 250 ft (~76 m). Real-world range depends on environment, obstructions, and the devices' antennas.
Common features include encrypted or anonymous network communications, options to share location access with trusted contacts, lost‑mode notifications, and ways for a finder to contact the owner (for example, via added contact info or QR codes). Specific privacy controls vary by maker—check each product's privacy details.
