Comments:
Single speed conversion with flip-flop fix gear wheel. Modern wheels. Seat post stuck cannot be adjusted
1 speed: for traveling short distances in a mostly flat neighbourhood. If you can walk there in 30 minutes, it should take around 6 minutes by bike. Not good for going up hills, even low grade climbs are hard. - Derailleur:
Tires 700 x 25c: very narrow tires, slick, for racing on asphalt.