| General | |
| Manufacturer: | Sony Ericsson |
| Model: | K550i |
| Year: | 2007 |
| Capacity battery (MAh): | 950 |
| Measurements | |
| Dimensions (mm): (width x height x thickness) |
46 x 102 x 14 |
| Weight (g): | 85 |
| Processor | |
| Memory | |
| Read-only memory (ROM) (MB): | 70 |
| Communications | |
| Phone: | GSM 1800, GSM 1900, GSM 900, UMTS 1900 |
| Bluetooth: | 2.0 |
| Other: | EDGE, GPRS, IrDA |
| Multimedia | |
| Screen Size: | 1.9 |
| Screen Resolution (px): | 176 x 220 |
| Screen type: | TFT |
| Rear camera (Mp): | 2 |
| Autofocus: | Yes |
| Flash: | Yes |
| Speaker: | mono |
| Output of earphones: | company |
| Other: | FM-radio |
| Management and input | |
| Buttons: | navigation buttons, physical buttons, numerical keyboard |
| Extension | |
| Memory Cards: | MS Micro (M2) |
| Additionally | |
| Operation time: (according to the manufacturer) |
of talk time up to 7 hours, of standby time — up to 350 hours |
| Features: | Can flashing from W610i |