High-quality steel stabilizes the bike. 2-way(up/down)adjustable handles and 4-way(front/back/up/down) adjustable seat. Seat height adjustment range: 0~5.91 inches. Applicable height: 4 feet 11 inches ~ 6 feet 3 inches. Handlebar height adjustment range: 0~2.76 inches. Heartrate tracking on handles. Accurate welding – zero worries of wobbling. Stable and quiet belt gearing. 18kgs flywheel. Anti-slip cage pedals to keep you safe. Can bear up to 150kgs.