No matter how tight you fix the seat it slips - could be dangerous. Computer doesn't link to app either from what I could work out - and no instructions provides - avoid I am sure there are better on the market.

Its been 4 months now that i have my indoor bike and my family and i have never been so happy. Just what we needed and lots of money we saving from the gym.

We were looking for a good quality (gym rated) spin bike for the home which wouldnt break the bank. We found lifespan had a special on for the SP-460 model that came down from $600 to $470 (delivered). It was exactly what we needed for our budget of under $500. It has a great computer that tells you your rpm, speed, heart rate and time. The resistance works a charm and the different adjustable heights of the machine makes sure you always have the right posture and comfort level needed to do your work out. It is a heavy piece of machinery which is used to counter the weight and movement of your sessions. A solid build and good product. I would recommend this to anybody looking for a spin bike on a budget.