Size:92mm(L)78mm(W)18mm(H) Main chip: SAMSUNG S3C2440A-40 Memory: 64MB(Capable of being expanded to 2G) Software Storage: SD card Screen: 3.5" TFT LCD with 320*240 resolution Audio Output: Dual audio track with CD acoustic fidelity Audio Power: Earphone dual audio track 0.25W/CHANEL,8Ohm/1.5W Battery: Built-in rechargeable lithium battery Chipsets: SiRF Star III Operating frequency: 1.575GHZ Orientation accuracy: 10m,2D RMS Antenna: Built-in active ceramics antenna