| Sony Ericsson K660i |
 | General |
| Technology | GSM, UMTS, HSDPA |
| Size | 104 x 47 x 15 mm |
| Weight | 95 grams |
| Available colors | green-white, violet-black |
| Display |
| Screen diagonal | 2 inches |
| Display resolution | 240 x 320 pixels |
| Display type | TFT |
| Number of colors | 256K |
| Memory |
| Phonebook capacity | 1000 |
| SMS memory / max. MMS size | dynamic / 300KB |
| Internal memory | 32 MB |
| Memory expandability | M2 |
| Data transfer |
| Frequency bands | 850/900/1800/1900 MHz |
| GPRS / EDGE | Class 10 (4+1/3+2) / Class 10 (236,8 kbps) |
| UMTS / HSDPA | present (384 kbps) / present (3,6 Mbps) |
| IrDA / Bluetooth | none / 2.0 (A2DP is) |
| WiFi | none |
| USB | 2.0 |
| Push-to-talk / RSS | none / present |
| GPS receiver | none |
| Basic functions |
| Profiles | present |
| Vibra function | present |
| Built-in handsfree | present |
| Voice calling / voice commands | present / present |
| Sound recorder | present |
| Alarm clock | present, also when turned off |
| Predictive text entry | T9 |
| Software |
| Platform | SE |
| WAP / HTML browser | present / present |
| E-mail client | present (POP3, IMAP4, authenticated) |
| Java | present, MIDP 2.0 |
| Games | 3 |
| Currency converter | present |
| Extra software | Google Map, VideoDJ, PhotoDJ, MusicDJ, TrackID |
| Multimedia |
| Main camera | 2 megapixel, fixed focus |
| Secondary camera | present, QVGA resolution |
| Video recording | present, QCIF |
| Music player | present, runs also in background |
| Equalizer | present |
| FM-radio | present - RDS |
| Battery times |
| Main battery | 950 mAh Li-Pol |
| Stand-by time | 330 hours |
| Talk time | 300 minutes |
| Other |
| browser shortcut keys |
