Hi-701bt, the 4 in 1 car cradel bluetooth gps receiver equiped with 20 channel sirf stariii chip, high sensitive, all in one, pda speaker, etc. With the new hi-701bt, all pda come with the bluetooth feature can be enable as gps pda and receive gps signal wirelessly from the bt/gps back card.  Hi-701bt most suitable for some pdas (like qtek s100, qtek 9100 xda mini, etc. ) which unable to use with wired gps receiver.   Almost any type of pda can be used with the 4 in 1 car holder by using suitable base connector. User can only change the base connector when he changes his pda. User can also use different kinds of pda with the same car holder. Taking the gps signal from the hinged gps receiver back card from the back of the holder the pda become a complete gps enable pda. The attached gps receiver can also act as an independent gps mouse by using different kinds of connecting cables. Hi-701 bt + gps version make the pda gps enable wire or wirelessly Accessories: Standard accessories:  Hi-701 bt 4 in 1 car holder Pda base connector (one type) Dc 12v cigarette lighter power cable (compatible from dc12v to dc24v) Hinged bluetooth gps receiver back card Audio cable Suction cup car mount  Specification  Chipset sirf star iii  Interfaces pcb golden finger & mini-1394  Protocol Nmea0183 gga, gsa, gsv, rmc, gll  Baud rate 4800, n,8,1  Max. Update rate 1 hz  Datum Wgs84  Channel 20 channel  Frequency L1,1575.42mhz  Hot start 8 sec. Average  Warm start 38 sec. Average  Cold start 48 sec. Average  Reacquisition tike 100 ms  Position accuracy 15m 2d rms, sa off  Macimum altitude 18,000m  Maximum velocity 515m/s  Voltage Dc 3.3v+-10%  Power consumption 90ma continuous mode  Antenna type Built-in active antenna  External antenna connector Mmcx (optional)  Dimension Fold:79 (l) x 60 (w) x 26 (h)mm Unfold:132 (l) x 60 (w) x 26 (h)mm  Led indicator: 3d positioning (blinking) or Searching gps (on)    Bluetooth specifications: Bluetooth v1.1 compliances   Frequency range:2.4 ~ 2.4835 ghz Unlicensed ism band  Interfaces usb/uart/spi  Receiver sensetivity: -80 dbm @ 0.1% ber  Transmitting power: Class 2 -6 dbm ~ +4 dbm  Rf input impedance: 50 ohms  Frequency hopping: 1600hops/sec.  Baseband crystal osc: 16mhz  Data rate: Up to 723kb/s  Operating temperature: -20c ~ +80c  Storage temperature: -30c ~ +90c  Transmitting range: 10 meters (typical)  Power consumption: 65 ma (typical)