GSM quad-band, capable of global roaming, with UMTS European/Asian 3GWindows Mobile 6.1 Professional OS smartphone with touch screen display Color TFT display, 320 x 320 pixels 1500mAh battery capacity, up to 5 1/2 hours talk time and 250 hours standbySupports MP3, WMA, AAC formats and Windows Media PlayerInternal memory-expandable with built-in microSD/microSDHCCompliant with Bluetooth v2.0 + EDR and 802.11b/802.11g WiFiVoice dialing, commands, recording and speaker phonePIM features alarm, calendar, calculator, To-Do and notes2 7/16" W x 4 1/2" H x 1/2" D, weight: 4.7 oz. Includes battery, travel charger, headset and USB cable