ULTRAHUMAN RING AIR
f you’re worried about developing one outsize Popeye arm from carrying around the weight of a smartwatch on your wrist all day, fitness trackers don’t come much more lightweight than Ultrahuman’s Ring Air. It won’t offer phone notifications, music controls or any of those other fancy features you get with a smartwatch, but it can still track your movement, sleep and temperature, and give you a better idea of