I was recently given the opportunity to be one of the first GPS-bloggers to get my hands on the Columbus v900 Bluetooth Datalogger. (thanks to my friends at buyGPSnow.com) I spent the last month with the v900, evaluating its build quality, battery performance, usability, functionality and data accuracy. The v900 is a very cool little unit, featuring a 51 channel MTK chipset, an internal 1000mAh Li-Poly battery, Bluetooth, a microSD card slot and even a built in microphone for recording and geo-tagging voice memos. It's all housed in a very tiny, very sleek stainless steel & polycarbonate shell.