I recently bought this bike (used) and discovered it's not the best fit for me, so I am selling it to buy a different one. Year: 2019 Size: 55 cm (medium - for riders approximately 5'7" to 5'11") Miles: ~900 Weight: 44lbs Motor: Bosch Performance Speed, 350W Battery: 500Wh - lasts a very long time! Torque: 63Nm Wattage: 350 Top Speed: 28mph 11 speed Integrated front and rear light back rack water bottle holder bell Removable battery Batter Key & Charger included This e-bike is UL 2849 certified. https://productiq.ulprospector.com/en/profile/5357731/qgns2.e517627?term=trek%20e-bike&page=1 https://www.trekbikes.com/us/en_US/ebike_faq/