Huami has launched a premium smartwatch, the Zepp Z in the US. It sports a round dial frame made of titanium alloy and a leather strap. The company claims it can offer up to 30 days of battery life during basic usage and up to 15 days of battery in a daily usage scenario. All of this while only weighing 40 grams. It is priced at $349, and it is already on sale on the Zepp site. For now, it is only available in a single leather brown strap model.