I'd spend a few more dollars and get a wireless computer. I don't like all those wires on my bikes.
Here's a good "inexpensive" one that I used a few years back.
PROTEGÉ 9.0 WIRELESS
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The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.