| Hardware and OS | Siemens SX45 | |
| Operating system | Microsoft Windows CE 3.0 for PocketPC | |
| Processor | 64-bit NEC VR4122 150 MHz | |
| Internal memory | 32 MB | |
| External memory | No | |
| Display | Siemens SX45 | other phones |
| Type | TFT | |
| Resolution | 240 x 320 px | |
| Touchscreen | resistive touchscreen | |
| Display area | cm2 | |
| Display aspect ratio | 4:3 (height:width) | |
| Colors | 65K | |
| Other | 57.6 mm x 76.8 mm
-0.24 mm pixel pitch | |
| Connectivity | Siemens SX45 | other phones |
| Wi-Fi | No | |
| Network | GSM | |
| SIM card | Mini-SIM | |
| Bluetooth | No | |
| Edge | No | |
| GPRS | No | |
| GPS | No | |
| Camera | Siemens SX45 | other phones |
| Multimedia | Siemens SX45 | other phones |
| 3.5 mm Jack | No | |
| Radio | No | |
| Design | Siemens SX45 | other phones |
| Dimensions | 134 x 87 x 26 mm | |
| Weight | 330 g | |
| Battery | Siemens SX45 | other phones |
| Battery capacity | 1550 mAh, Removable Li-Ion | |
| Battery life | Stand by time- Up to 150 h
Talking time- Up to 2 h
| |
| Other | Siemens SX45 | other phones |
| Release date | 2001 | |
| Sensors | Infrared port | |
