Simple and easy to use. Provides all of the basic information you need.

No battery level indicator, so low battery is only signaled by loss of data.

This is really a nicely engineered product. I used it for several seasons and found it significantly more accurate than Strava on my iPhone. When the batteries are low, there will be problem with the signals between the sensor and the display unit, and the symptom of this is display of ~0 mph when traveling at speed. To keep things simple, this is the time to change both batteries, 1 in each unit. Data I use is ride time, distance, average & maximum speed, and total miles (odometer). I have not used the cadence feature, since an additional add-on must be purchased for this.

The holder for the display unit clamps to the stem or handlebar, and the display attaches by inserting and rotating 1/4 turn. This attachment can get worn over time -- if you aren't careful, the display unit will come out, get lost, and then it on to another computer.

Similar Products Used:

None

good display, great features, relatively easy to use.

Features disappearing after 6 mos.

The product worked great for the first 6 mos. Then there was a problem with no signal. Replaced batteries, and that seemed to help. Just prior to this, it stopped transmitting speeds below 10 mph, instead it would approx double the displayed speed. No idea if avg mph is correct now.

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none

Easy to use
Easy to read
Wireless

Cadence Magnet attachment
Durability

This cyclocomputer has an intimidating number of features, but for basic use, it's very simple. Just hit one button several times to clear out your current ride data, then go.

Nice big buttons on the top let you switch between cadence, ride time, average speed, etc, and it always shows your current speed. The display is very clear and the numbers are large enough to be easy to read.

Unlike several devices I was looking at when I bought it, the optional cadence sensor is also wireless. Not having to route wires to anything is a major advantage.

I have had two problems with my C4. The plastic housing on the first one I had cracked (Performance replaced it under warranty), and the cadence magnet fell out of the plastic holder. If it weren't for those issues this would be a five-star review.

The VDO C3 DS is basically identical except it lacks the countdown/interval timers. If you don't need those, it's a better value.

Similar Products Used:

Garmin GPS 12 (not the best GPS for biking)