Specification Processor Qualcomm® QSD8250™, 1 GHz Operating System Android™ 2.1 (Éclair) Memory ROM: 512 MB RAM: 512 MB Dimensions (L x W x T) 119 x 59.8 x 11.5 mm ( 4.69 x 2.35 x 0.45 inches) Weight 130 grams ( 4.59 ounces) with battery Display 3.7-inch AMOLED with 480x800 WVGA resolution Network HSDPA/WCDMA: @ 900/AWS/2100 MHz @ Up to 2 Mbps up-link and 7.2 Mbps down-link speeds Quad-band GSM/GPRS/EDGE: @ 850/900/1800/1900 MHz (Band frequency and data speed are operator dependent.) Device Control Trackball with Enter button GPS Internal GPS antenna Connectivity Bluetooth® 2.0 with Enhanced Data Rate and A2DP for wireless stereo headsets Wi-Fi®: IEEE 802.11 b/g Micro-USB port 3.5 mm audio jack Camera 5.0 megapixel color camera with auto focus, 2X digital zoom, LED flash, and geo tagging Audio supported formats .aac, .amr, .awb, .wav, .wma, .mp3, .mid Video supported formats .mp4, .3gp, .3g2, .m4v Battery Rechargeable Lithium-ion polymer battery Capacity: 1400 mAh Talk time: @ Up to 10 hours for 2G networks @ Up to 7 hours for 3G networks Standby time: @ Up to 290 hours for 2G networks @ Up to 250 hours for 3G networks (The above are subject to network and phone usage.) Expansion Slot microSD™ memory card (SD 2.0 compatible) AC Adapter Voltage range/frequency: 100 ~ 240 V AC, 50/60 Hz DC output: 5V and 1A Special Features Proximity sensor Ambient light sensor G-sensor Digital Compass