content: I purchased this odometer/computer for my mountain bike. Assembly was not difficult at all. I did have one question. I called the 800 number that was provided and the agent was very helpful.Bad News- On my second ride, the unit popped off and I lost it on the trail. Poor design...Good News- I called the 800 number again, and they will be sending me a new unit as a "courtesy".Bottom Line- "just ok" product, (then again it was only $10.95), but "Good" costumer service.