Everyone in the world has a wearable these days, and now it’s Microsoft’s turn. Cnet reported today that the Microsoft Band is now available after a surprise debut last night. Available only in the US for now, it costs $199, and works on Android, iPhones, and Windows Phone devices alike. In addition to the obvious optical heart-rate monitor you can see in the picture above, it will include a UV sensor to keep track of your sun exposure, a galvanic skin response sensor to measure stress, and built-in GPS. The 18.5-millimeter band’s made of a “thermal plastic elastomer,” which means it’s probably nice, soft, and stretchy.