The i-Blue High Sensitivity Bluetooth GPS Receiver is an add-on portable GPS unit compatible with PDAs, Laptops, and Palm Handhelds that support Serial Port Protocol (SPP). It boasts a 30 hour battery life, and auto sleep mode enabling up to 360 hours of standby time. Charging the device takes only 3 hours and comes packed with a car charger. The device can locate your position in under 60 seconds from startup. The i-Blue GPS is just 2.75â€? x 1.86â€? x 0.8â€? and weighs a mere 2.5oz.
Available here for $105 sans software.