Mobile Gadget News has published a review, including accuracy information and configuration for Windows Mobile Pocket PC and Smartphones.
"The Mobile Crossing Bluetooth GPS receiver is a very nice little unit. Measuring 3.54" x 1.97" x 0.63", this little device will fit in a shirt pocket or comfortably in the palm of your hand. The only control on the unit is the on off switch located on the side and there are 3 colored status LEDs on the top, Bluetooth status, GPS status, and low battery indicator.
Built in is a Lithium-Ion battery that is rated for up to 8 hours of constant use, testing this out I let it run for 9 hours before the Light turned Red indicating it needed to be charged. To charge the unit, you can use either the 110 VAC power cord or the 12 VDC car charger, both are included with your purchase."