| General | |
| Manufacturer: | O2 |
| Model: | XDA Stellar |
| Platform: technological, no software |
HTC Kaiser |
| Year: | 2007 |
| Operating system: | Windows Mobile 6.0 Pro |
| Capacity battery (MAh): | 1350 |
| Measurements | |
| Dimensions (mm): (width x height x thickness) |
59 x 112 x 19 |
| Weight (g): | 190 |
| Processor | |
| Processor Type: | Qualcomm MSM7200 |
| Clock Frequency (MHz): | 400 |
| Memory | |
| Random access memory (RAM) (MB): | 128 |
| Read-only memory (ROM) (MB): | 256 |
| Communications | |
| Phone: | GSM 1800, GSM 1900, GSM 850, GSM 900, UMTS 1900, UMTS 2100, UMTS 850 |
| Bluetooth: | 2.0 |
| Wi-Fi: | 802.11b,g |
| Other: | , EDGE, GPRS, GPS, HSDPA, UMTS/WCDMA |
| Extras: | GPS-receiver — gpsOne (Qualcomm) |
| Multimedia | |
| Screen Size: | 2.8 |
| Screen Resolution (px): | 240 x 320 |
| Rear camera (Mp): | 3 |
| Front camera (Mp): | 0.3 |
| Speaker: | mono |
| Output of earphones: | ExtUSB |
| Management and input | |
| Touchscreen: | resistive |
| Buttons: | QWERTY-keyboard, navigation buttons, physical buttons |
| Extension | |
| Memory Cards: | miniSD, miniSDHC |
| Connectors: | ExtUSB |
| Additionally |