product size: 104mmX88.5mmX23mm 3.5 inch touch panel, TFT screen Display color: 65K colors Display resolution: 320 Pixels x 240 Pixels CPU Chipset: SAMSUNG S3C2416 processor400/533MHz Operating System: Microsoft WinCE.NET5.0 (Core Version) Built-in Memory: 64/128MByte DDR2 SDRAM  Flash memory: NAND Flash support 64MB to 8GB Built-in Bluetooth v2.0 Waterproof IP54 Audio Format: MP3/WMA9/WAV Video Format: WMV,ASF,MOV,MPG Photo Format: JPG,TIFF,PNG Battery: 3.7V 1150 mAh Li-Ion Battery Power input:DC 5V charger(for car)/ Optional 5V DC adaptor (Option) Expansion Slot: T FLASH card Slot  (Maximum support:8 GB) Speaker: Built-In Speaker USB: USB2.0 Mass Storage USB connector (Mini Port) Hot Start: <=3sec   (Open Sky,-130dBm) Warm Start: <=32sec  (Open Sky,-130dBm) Cold Start: <=38sec  (Open Sky,-130dBm) Satellite Reacquisition Time Accuracy: 100 Ms Position Accuracy: <5m  (Outdoor,-135dBm) GPS frequency 1575.42MHz Sensitivity: -157 dBm GPS Module: High Sensitivity Receiver (NXP GNS7560) Accuracy and velocity < 10 meter, 0.1m/s Antenna: Real built-in antenna (built-in GPS high sensitivity receiver    42 channel) Firmware upgrade:TFlash card Operation time(maximum): 2.5 hours(when battery full power) Audio out 3.5 mm stereo jack Operation temperature:  -10°C to +50°C  Storage temperature: -20°C to +70°C Support language: multilateral language