Amazfit

Amazfit Helio Ring A low price for a titanium ring, but read the fine print before you call it a bargain. It launched at $299 in the US, Amazfit cut it to $199.99, and its Zepp Aura and Zepp Fitness services are now free for owners, so most features cost nothing extra. The catches are practical: it comes in only three sizes, 8, 10 and 12, and in one color, and battery is rated at four days, with one test getting about two and a half with everything switched on. It also lacks notifications. If one of those sizes fits and charging twice a week does not bother you, it is a cheap trial of ring tracking; otherwise the RingConn Gen 2 Air is the safer budget pick.