The K3 Ultramulti EDC keychain tool is highly functional, combining a flashlight, laser pointer, and lighter into one convenient device.

At CES, Donut touted a head-spinning set of features for its solid-state design, but it was light on details about how it actually works.

Using the ATX 9801 is easy -- plug one end into a mains outlet, and it acts like a short extension lead with a digital display. The socket on the front accepts pretty much every power plug worldwide, ...

Nano-sensors that work without batteries or wires could pave the way for more comfortable, less obtrusive sleep and health ...

After testing countless devices for accuracy, comfort, and general value, these are the best fitness trackers I'd recommend.