Apple Watch Series 1 still the best compare to the newly upgraded Apple Watch Series 2 in the smartwatch arena. Peoples are not fond of the smartwatch but Apple has some refinement on Series 2 to make everything has people’s need at a more affordable price.
Apple Watch Series has the same storage space, speed, and basic functions but for less money, but WatchOS 3 is much-improved software of Apple Watch Series 2 over last year Apple Watch Series 1
Apple Watch Series 2 is a swim ready water resistance with onboard GPS compare to Series 1 has nothing.
The Apple Watch, in its second year, has focused on refinement. Really, the best part is the operating system, which has become easier to use, faster, and even offers better battery life.
If you are not an athlete, it is better to buy Apple Watch Series 1 because still the best in terms of functionality and affordability, only you are giving up swim-proofing, GPS and other few minor things.
Scott Stein believes Apple Watch Series 1 still has the best functionality although less in speed, battery life and vulnerable to scratches compare to Series 2.