VGPS-900: Columbus VGPS-900 Bluetooth GPS Data Logger (microSD Slot, Voice Recording, 51ch. MTK) Standard Log Mode: Date, Time, Latitude, Longitude, Altitude, Speed, Heading, and Voice Professional Log Mode: Date, Time, Latitude, Longitude, Altitude, Speed, Heading, Fix Mode, PDOP, HDOP, VDOP and Voice Recording Format: CSV, Voice Record Spec: WAV, 48 kbps Supported Platform: Windows, Mac OS, Linux Storage: microSD with support up to 2GB capacity and FAT 16 file system