Battery life varies by device type: small item or kid trackers can last the longest (up to about a year in some listings); wrist-worn fitness trackers commonly run from several days up to around 18 days; and smartwatches range widely from about a day to roughly a month depending on features and usage.

Small Bluetooth tags typically offer phone-network locating, a built-in speaker that can play a sound, precision location when used with compatible phones, and a lost mode that notifies you if the tag is detected by the network.

Most trackers pair with a smartphone over Bluetooth and use a companion app or account for setup, data sync, notifications, and advanced features. Some devices require a specific app and have phone-compatibility requirements listed.

Common battery types are coin-cell batteries (CR2032 and CR2025) for small tags and various rechargeable lithium‑ion batteries for wrist-worn trackers and smartwatches, including some listings that reference specific installed cells.

Listings use general "water-resistant" wording and specific ratings such as IP67 and 5 ATM. One smartwatch listing also cites a 50‑meter water-resistance rating referenced to an ISO standard.

Common additional connections include Wi‑Fi and GPS for location and cloud features, and several devices list USB‑C as a wired charging or data interface.

Setup is generally straightforward: some item tags offer one‑tap or instant connection methods, while most wearables pair via Bluetooth to a companion smartphone app. In all cases Bluetooth must be enabled on your phone for app pairing and device setup.