(Pre-Owned, Good) Sony Ericsson Xperia X1 Windows Phone With Slide-Out QWERTY Keyboard (Black) (First Xperia Smartphone)

Display
3.0-inch resistive TFT touchscreen with a resolution of 800×480 pixels, offering crisp visuals and sharp detail for its time.

Camera
3.2MP rear camera with autofocus and LED flash, capable of VGA video recording at 30fps—decent for 2008 standards.

Operating System
Runs Windows Mobile 6.1 Professional with Sony Ericsson’s custom “Xperia Panels” interface for multitasking and app shortcuts.

Performance
Powered by a Qualcomm MSM7200 528 MHz processor with 256 MB RAM and 512 MB ROM—smooth for basic tasks and early apps.

Storage
Expandable via microSD card (up to 16GB officially), with around 400 MB of user-accessible internal memory.

Connectivity
Supports 3G HSDPA, Wi-Fi, Bluetooth 2.0 with A2DP, GPS with A-GPS, miniUSB, and a 3.5mm audio jack (via adapter).

Keyboard
Features a full QWERTY slide-out keyboard, ideal for messaging, emailing, and document editing on the go.

Build & Design
Premium stainless steel body with a curved arc-slider form factor. Stylish and solid, weighing about 145 g.

Battery
Uses a 1500 mAh removable battery, offering up to 10 hours talk time on GSM and up to 500 hours standby.