With the SiRF CGEE (Client Generated Extended Ephemeris) technology, has the capability of predicting satellite positions for up to 3 days in advance, and will deliver a CGEE-start time of less than 15 seconds under most conditions without any network assistance.
The BU-353-S4 is powered by a SiRF Star IV GPS chipset, and will provide you with superior performance in urban canyons, and in dense foliage. The BU-353-S4 is a USB magnet mount GPS receiver that features a highly sensitive, low power consumption chipset in a ultra compact form factor compatible with Microsoft Windows 10, 8, as well as 7, Vista & XP.
