RoyalDigital BS4100 Bluetooth GPS Receiver
The BS4100 itself has 16 hours of battery life, 3 LEDs to indicate its status, and can be powered by a USB port. It even comes with a car charger and a skid-proof pad so you can mount it on your dashboard. There’s no pricing information on their site, so you’ll have to email in for a quote.
Product Page [RoyalDigital via Navigadget]