It is just standard chain, and it will strech and wear. But you dont need to change it as often as the drive chain. The chain and gears will wear together, just adjust the chain to take up the slack. You can also turnover the chainrings on the timing chain to get more use from them.
"When the spirits are low, when the day appears dark, when work becomes monotonous, when hope hardly seems worth having, just mount a bicycle and go out for a spin down the road, without thought on anything but the ride you are taking." - Arthur Conan Doyle