I ride with a wireless cycle computer and a garmin forerunner 305 but I leave it on my wrist like running. You can pick up another on eBay pretty cheap I bet. I think I paid 145 for mine on amazon about a year ago to replace my last forerunner 305. It locked up after 3 years and then I sent it back for replacement fit 80$. Now I have 2 dedicate one for running other for bike