| Local Name | 3660 |
| Technology | GSM |
| 2G Bands | GSM 900 / 1800 / 1900 |
| GPRS | Class 4 |
| EDGE | No |
| Announced | 2003, 4Q |
| Status | Discontinued |
| Dimensions | 130 x 57 x 26 mm, 139 cc (5.12 x 2.24 x 1.02 in) |
| Weight | 130 g (4.59 oz) |
| SIM | Mini-SIM |
| Display Type | TFT, 65K colors |
| Screen Size | 2.1 inches, 35 x 41 mm (~18.9% screen-to-body ratio) |
| Resolution | 176 x 208 pixels (~130 ppi pixel density) | 5-way scroll key - Wallpapers |
| OS | Symbian OS v6.1, Series 60 v1.0 UI |
| CPU | 104 MHz ARM 920T |
| Card Slot | MMC |
| Internal Memory | 3.4 MB | Editable message templates - Calendar notes |
| Primary Camera | VGA, 640 x 480 pixels |
| Video | Yes |
| Secondary Camera | No |
| Alert Types | Vibration; Downloadable polyphonic, monophonic, WAV ringtones, composer |
| Loudspeaker | Yes |
| 3.5mm Jack | No |
| WLAN | No |
| Bluetooth | v1.1 |
| GPS | No |
| Infrared Port | Yes |
| Radio | No |
| Messaging | SMS, MMS, Email |
| Browser | WAP 2.0/xHTML |
| Languages | Most major European, Asian and American |
| Java | Yes, MIDP 1.0 |
| Features Summary | Predictive text input, Calculator, Voice dial, Voice record |
| Battery | Li-Ion 850 mAh battery (BL-5C) |
| Stand By | Up to 150 - 240 h |
| Talk Time | Up to 2 h - 4 h |
| Colors | Red, Blue |
| SAR US | 0.77 W/kg (head) 1.13 W/kg (body) |
| SAR EU | 0.75 W/kg (head) |
