Sony Ericsson Xperia X1 Specifications and Price. The attractive design of the X1 has still not been imitated by any other Windows Mobile slider phone. Its dimensions of 110 x 53 x 16.7mm aren’t exactly small, but for a PDA-phone with a slide-out QWERTY keypad they are very excellent. The X1 actually looks narrower. At 158g, the X1, like the Touch Pro, is not for those who like featherweight phones which melt in the pocket. The build quality of the X1 is with solid structure throughout and good use of metallic materials around the screen and in the back battery cover. The matte finish on these metallic parts feels good in the hand and gives a stylish look to the device.

There are two soft keys on the front and below the screen. Unfortunately, the strange triangular shape of the buttons makes them hard to find sometimes. It can be annoying when you need to quickly access the phone application to make a call. The directional pad is quite large and effective. The rectangular selector in the middle of it is also an optical joystick. It means you can slide your thumb across it to move a cursor rather than pressing on the directional pad around it.
General
Phone type : Candy bar
Operating system : Microsoft Windows Mobile
Dimensions (H x W x D) : 110 x 53 x 16.7 mm
Expansion slot(s) : microSD
Connectivity
GSM frequency bands : Quadband
Connectivity options : HSDPA, HSUPA, Bluetooth, Wi-Fi, USB
Display and Text Input
Display size : 3-inch screen
Display resolution : WVGA
Touchscreen : Yes
Keypad : QWERTY
Performance
Battery capacity : 1500 mAh
Max. talktime (in hours) : 10 hours talktime
Main processor speed : 528 MHz
ROM : 512 MB
RAM : 256 MB
Multimedia
Maximum camera resolution : 3.2 megapixels
Audio jack type : 3.5mm
Additional multimedia features : A-GPS, autofocus camera, Bluetooth stereo A2DP
Price : $987 (List price as of Oct 29, 2008)