Bluetooth GPS Receiver is a complete wireless satellite position receiver, adopting the high sensitivity SiRF Star III chip and having wireless transmission function. With 20 GPS channel, it can quickly receive GPS signal and quick positioning in even weak GPS satellite signal area like in the City or valley. The basic design framework is based on generation 1 indoor GPS communication technology, super sensitivity over -157dBm ( / -187dBw) and low-loss technology. This revolutionary system with Bluetooth wireless technology provides incredible sensitivity for you to use in conjunction with Bluetooth ready device (installed with navigation software) such as Notebook PC, PDA or Smart Phone as a navigation aid for traveling, fishing, climbing or surveying. Limited Time Bonus Free Gifts - Silicon Protective Case & Non-slip Matt!!! Act Fast!!!