Altimeter
Digital Wireless
Cadence (optional)
Heart Rate (optional)
Odometer survives battery changes.
Gradients

No way to export trip data, though not sure how important that is without a GPS.

I grabbed this at MEC for $79 CAD (reg price). No other cyclo-computer (that I know of) has digital wireless, and a barometric altimeter for under $100. There isn't a lot of info out there on this device, and the people who have reviewed it slam it's usability. But I have used it twice now, and have the hang of it. Maybe if you want to play with it as you ride it may not be ideal, but as a tool for recording your trip it is great.