After the OpenDots One, come the OpenDots 2. But while Shokz's naming convention might have changed, there are plenty of similarities between the two pairs.
The OpenDots 2 once again feature an open earbud design that don't feature eartips, so outside sounds are let in to keep you constantly aware of your surroundings. They also clip onto your ear for a more secure fit, which is handy if you're partaking in a vigorous sport like running.