The height of the seat to the floor is approx 45-50cm.
#4 Is it chain driven or belt/strap? It the highest resistance level high enough for a strenuous effort?
No belt or chain, An internal fan generates air resistance, the harder & quicker you pull, the more resistance you generate 8 Resistance Tweak Lever: Seamlessly tweak how much air the fan intakes to adjust the overall resistance.
Marcy
Owner manual PDF of Marcy NS-6000RE Onyx Geneva Rowing Machine.