Earlier quoted context omitted.
Mechanical watches, think Rolexes, have smooth second hand movements but they are acutally still ticking, just about 6 times a second. The Apple Watch, on the other hand, has a second hand with 60 ticks per second so that the second hand is about 10 times smoother.
And Bulova has the Precisionist line that moves much more smoothly: > In 2010, Bulova introduced the Precisionist, a new type of quartz watch with ultra-high frequency (262.144 kHz) which is claimed to be accurate to +/- 10 seconds a year and has a smooth sweeping second hand rather than one that jumps each second.
By the way, Seiko has had a movement for some time that is rated to +/- 5 seconds a year. I think it was on a special edition of the Grand Seiko line (already rated to around 10 seconds a year, so you'd get 5 seconds off less. Yay!)