Columbus V-990 GPS Data Logger (microSD Slot, Voice Recording, 66 ch. MTK) A good data logger still needs practical track processing software. Time Album attached to V-990 can help you freely process track.Time Album has various personalized settings. It can export track according to distance or time, select metric or imperial unit or record intervals, and support various operating systems including WINDOWS, MAC OS and LINUX. V-990 adopts the currently most advanced and stable MTKII 3329 super single chip, with only 35s and 1s required respectively for cold start and warm start. It can realize rapid and stable positioning under various environments including urban district and suburb. The built-in high-capacity Li-polymer battery can allow you to use the device all day (24hrs).