I have a GPS with North America map for rental. $8 per day with $150 deposit.
My GPS Unit is by Garmin (2565), 4.3" screen which comes with a front camera as well (save you a lot of trouble should you run into an accident!)
Contact me at 9 six 5 2 zero 3 6 8. Pick up location at Bugis, Bedok or Bukit Batok only.