| Local Name | 1661 |
| Technology | GSM |
| 2G Bands | GSM 900 / 1800 | GSM 850 / 1900 |
| GPRS | No |
| EDGE | No |
| Announced | 2008, November. Released 2009, Q2 |
| Status | Discontinued |
| Dimensions | 108 x 45 x 13.8 mm, 65.9 cc (4.25 x 1.77 x 0.54 in) |
| Weight | 82 g (2.89 oz) |
| SIM | Mini-SIM |
| Body | Flashlight |
| Display Type | TFT, 65K colors |
| Screen Size | 1.8 inches (~21.0% screen-to-body ratio) |
| Resolution | 128 x 160 pixels (~114 ppi pixel density) | Themes and wallpapers |
| Card Slot | No |
| Phone Book | Up to 500 entries |
| Call Records | 20 dialed, 20 received, 20 missed calls |
| Internal Memory | 8 MB |
| Alert Types | Vibration; Downloadable polyphonic ringtones |
| Loudspeaker | Yes |
| 3.5mm Jack | No |
| Sound | 2.5 mm audio jack |
| WLAN | No |
| Bluetooth | No |
| GPS | No |
| Radio | FM radio, dedicated key |
| USB | No |
| Messaging | SMS (up to 250) |
| Browser | No |
| Games | Yes |
| Java | No |
| Features Summary | Predictive text input, Organizer |
| Battery | Li-Ion 860 mAh battery (BL-4C) |
| Stand By | Up to 475 h |
| Talk Time | Up to 4 h 10 min |
| Colors | Black, Grey |
| SAR US | 1.31 W/kg (head) 0.60 W/kg (body) |
| SAR EU | 0.91 W/kg (head) |
