Most smartwatches act as a secondary display for your phone, but there's a select few, like the Neptune Pine, that just want to replace it altogether. It's in this latter category that you'll find the chunky Exetech XS-3: a watch that stands almost two centimeters tall from your wrist. Wrapped in plastic and attached to a heavy-duty rubber strap, the hardware looks tougher than it really is. There's no back cover other than the battery itself, which is exposed to the elements and leaves us concerned as to how sweat-resistant (let alone rain-resistant) this device will be. In any case, it's with the internals and software that things start to get interesting, because the XS-3 comes pretty close to replicating every major function of a smartphone.