I used this computer for 6 months and it worked great in the beginning. However, later on it started acting up and resetting even though the battery was perfectly fine. I don't have the instruction booklet with me anymore since I sold the bike with it, but you'll need to set the wheel size. As far as features go, it provides speed, distance, temperature, trip just to name a few. Always found resetting trip and distance to be a pain.

Try and call Bell to see if they can give you instructions. I think the model is wireless 12 (or 20). It's the only current wireless model.