Nokia LD-4W Bluetooth GPS Module is exactly that and nothing else. Pairing the LD-4W to a Bluetooth compatible device with navigation software -- such as a mobile phone -- is nearly automatic.
The LD-4W operates on a SiRF Star III chipset, which is pretty standard these days. During our tests we paired the LD-4W with a Nokia handset running TomTom mobile version 6 and found we had GPS lock, on average, between three and four minutes after switching the device on. Again, this is standard.