Just about any non-gps bike computer will do the long battery life and basic speed/time/distance data, and derivations thereof (max/min/ave/trip etc). Extras such as cadence, altitude, temperature, heart rate are available on more costly (or less cheap) models.
Generally, wired models don't suffer from interference, and cheaper wireless models do. More expensive wireless models (often those that have more than one remote sensor - cadence or heart as well as wheel) often have coded transmissions rather than basic pulses, and are more resistant to interference.
A disadvantage of wireless is that you need transmitter batteries as well as the computer battery, and occasionally a receiver battery if wireless is optional via a different handlebar mount. These separate batteries inevitably all run out at separate times, unless you change them all when the first runs out.
Interference may come from LED light electronics, cables in the road, overhead power cables, or other things. LED light interference is generally manageable by moving the light and computer as far apart as possible, but if there's a cable in the road, your only option may be to change your route (my max speed on club rides was always about 70 mph because there was a traffic detector on my route into the start).
[edit]
well, well, what will come next?
Here's a wireless bike computer with a 6-month battery life that talks to a smartphone in your back pocket by bluetooth, including displaying notifications and navigation cues.
http://ciclosport.com/en/produkt/226/hac-1-2(ciclosport used to do a cycle computer that would record cadence/speed/heart etc for later download, but it's discontinued)
