AT&T Palm Centro PDA White Unlocked Frequency Modes GSM 850 / GSM 900 / GSM 1800 / GSM 1900 Weight 4.4 oz (125 g) Dimensions 4.22 x 2.11 x 0.73 (107 x 54 x 18.5 mm) Form Factor Bar Internal Antenna Battery Talk: 4 hours max. (240 minutes) Standby: 300 hours max. (12.5 days) 1150 mAh LiIon Display Type: LCD (Color TFT/TFD) Resolution: 320 x 320 pixels Colors: 65,536 (16-bit) Platform / OS Palm OS version 5.4.9 Memory 64 MB Phone Book Capacity shared memory Bluetooth Yes Infrared (IR) Yes PC Sync HotSync USB Yes Voice Enabled Dialing Yes Data Tethering Yes Flight Mode Yes High-Speed Data Technology: EDGE class 10 WAP/ Web Browser Software: Blazer 4.5 Keyboard type QWERTY Touch Screen Primary input method: Stylus Memory Card Slot (TransFlash)up to 4 GB Email Client VersaMail 4.0 Instant Messaging Yes MMS Yes Text Messaging (SMS) 2-Way: Yes threaded viewer Camera Resolution: 1+ megapixel Video Capture Yes Headset Jack (2.5 mm) Yes Push-To-Talk Type: Kodiak RTX Speaker Phone Yes