We tackled assembling the bike as a family project. ru-vid.comUgkxzg0clhbtRf2gGxPkVETFKJJKGqdsorQu The package is heavy, but I have 2 teen boys that were able to move it. The written instructions were great- we didn't need to watch the videos, but it was good knowing that the option was there if we needed it. After we were able to get it set up, the boys each rode 3 miles and I rode 8 and the bike stayed quiet. The display is easy to reset, and you can put it on whichever setting you are using (time, distance, calories, etc). I will say that my butt is a little sore from the seat, but that could be because I haven't rode in a while. While it is comfortable for me, it was not comfortable with the seat position for my friend (could not move the seat back far enough and he slightly looked like a kid riding a tricycle that he had outgrown). He also said that the seat hurt his manly parts. We are going to look for a different seat that will be compatible with this bike for him.I did purchase the Wahoo Cadence sensor and strapped it to the crank of one of the pedals. This will sync with my Apple Watch, iPhone and will import data in to my Health app. Wahoo does have other sensors available other than cadence. I can also keep either my phone or my iPad on the display and they both feel pretty secure.
I've had a Sunny 901 for over 4 years now and it's been totally bullet-proof. The only thing that's been annoying about it is that it's difficult to change the brake pads. I finally had to do so about a year ago and it took me about an hour of wrestling with the bike to do so :(