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The chain runs outside the rear rocker swing, and has a handy rear chain stretcher, making removal pretty simple.
The chainring has 52 sprockets whereas the rear hub gear counts 14 sprockets. That gives us a ratio of 1:2.7 in first gear, 1:3.7 in second gear and 1:5 in third gear.
The chain itself has 96 links. There's no master link for opening the chain but a standard chain tool can pop out any link.