Qstarz BT-Q818 is the world's first GPS receiver to meet superior sensitivity and ultra low power consumption at the same time. It can navigate up to 32 hrs which is 3 times more than others. BT-Q818, the luxury and mirror surface design, will be definately your best choice. Features: - 32-channel all-in-view tracking for fast acquisition and reacquisition - super high sensitivity-158dbm adopting mtk chipset - lower power consumption up to 32hrs navigation time - Fast position fix, cold start 39s, warm start 36s, hot start 1s - personal / portable navigation (PDA, smartphone, PC, etc.) - waas egnos support - auto on-off function for smart power control BT-Q818 got many of awards from the world