Features: 1) Acquisition: 32 channels parallel 2) Capable of operating indoors and tracking signals down to -157dBm (-187dBW) 3) 2005 new technology 4) Auto on-off function (patented) 5) 10 - 12 hours operating on full charged battery 6) Easy place, easy use 7) The HS-B02 is a total solution GPS receiver with Bluetooth wireless transmitting ability, designed based on RFMD indoor high sensitivity (HS-B02) GPS architecture. The HS-B02 is a new generation GPS technology. 8) We special design it with patented auto ON-OFF function. Once you place it in your car, you do not need to care it again. When you switch your car on, it is ON automatically. When you switch your car OFF, it is OFF too. We make wireless different from what you know before. Furthermore, the EASY-PLACE has your HS- B02 stay still in your car no matter how sharp you turn your car or how sudden you stop your car. You can also easily take it away for outdoor use 9) We offer you 32ch parallel Bluetooth GPSS receiver with high quality Inner packing: Gift boxes