First off, thank you EWheels for existing! Excellent customer service, speedy delivery and great products. I bought a KS14D 340 version as my first wheel. Even with a slight delay in shipment, the wheel still arrived in 3 days. Seemed like longer cause I was so anxiously waiting, checking my cameras every minute off each of those days to see if fedex was at my door or driveway, cautiously due to all the mail theft reports in my area. But I kept in contact with Ewheels staff and they kept me in the loop and sure enough on the third day it arrived. There's definitely a learning curve to the EUC. Maybe a 16 inch wheel would have been better as recommended by many. But after a few days chances to ride im taking it on light offroading trails. Still though, when a car goes by or a kid comes out of a driveway on his bike in my direction, I tend to tense up, and that definitely does not help the learning experience. "Don't fall!" the kid shouts.. still have problems with balance when first starting up in front of my house, so that's kinda embarrassing in front of my neighbors, but once I'm comfortably on and riding for some time, I'm cruising at regulated 12mph beginner speed setting down my neighborhood and pulling up my driveway like a pro! Due to shipping, the wheel comes with an engine lock, which sadly took me an hour to figure out how to unlock with a mobile device. There is no unlock button on the wheel! lol. You MUST download the EUC APP in order to unlock your wheel. Open the app, connect it by bluetooth to your constantly beeping wheel (no password required;it asks, just leave it blank and continue...) a greyed out selection called wheel settings should be on a list, open that, and go pass all your light color settings and you should find the lock/ unlock button. I've been following the EUC communities for some time now and now I'm proud to say I'm a member of it! Thanks again EWheels team for making that possible!