- Model: BU-353S4<br />- SiRF Star IV High Performance GPS chipset<br />- Frequency: L1 1575.42MHz<br />- Channels: 48<br />- Tracking Sensitivity: -163 dBm<br />- USB interface connection port<br />- Comes with software CD & suction cup<br /><br /><br />                                                                                                                                Dimensions: 2.05 in x 2.05 in x 0.79 in (5.2 cm x 5.2 cm x 2.0 cm)<br />Weight: 4.09 oz (116 g)<br /><br />