Seventy seconds is one minute and ten — the length you reach for when a flat minute runs out too soon. It suits a slightly longer reheat, a steeping step, a breathing exercise, or a rest between sets where the extra ten seconds makes the difference.
Using it on repeat — counting rounds or steps — six rounds of seventy seconds is seven minutes. In the editor, set the number of rounds and the 1:10 countdown runs them in turn.
A 50 second timer — just under a minute, for a short task or countdown. Repeats as many times as you set.
A 75 second timer — a minute and a quarter, a useful in-between length. Repeats for your chosen rounds.