Thanks! I am using Harrys Lap Timer and that is a external Tom Tom GPS iPhone mount that I have wired into my iPhone 4s. I've had the mount since I had an iPhone 3 and I find it works a lot better than just using the internal GPS on the iPhone. I just ordered an iPhone 5 and I doubt it will work with the Tom Tom because of the lightning connector so hopefully the internal GPS will be good enough.
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