Nokia 3720 classic
| General | Form Factor | Candybar |
| Network | GSM 900 / 1800 / 1900 | |
| Size | 115 x 47 x 15.3 mm | |
| Weight | 94 g | |
| Battery Type | Li-Ion 1050 mAh | |
| Talk Time | 7 h | |
| Standby Time | 400 h | |
| Display | Display Type | TFT |
| Display Size | 2.2 inches (240 x 320 pixels) | |
| Display Colors | 16 | |
| External display | No | |
| Memory | Internal Memory | 20 MB |
| Card Slot | microSD, up to 8GB, 1GB card included | |
| Camera | Type | 2.0 megapixel camera (1600 x 1200 pixels) |
| Zoom | - | |
| Flash | Yes, LED | |
| Video | Yes, QCIF at 15 fps | |
| Secondary Camera | No | |
| Messaging | SMS | Yes |
| MMS | Yes | |
| EMS | No | |
| IM | No | |
| Yes | ||
| Connectivity | GPRS | Yes |
| EDGE | Yes | |
| 3G | No | |
| Wi-Fi | No | |
| Infrared | No | |
| Bluetooth | Yes, v2.1 with A2DP | |
| USB | Yes, v2.0 microUSB | |
| Features | OS | No |
| Browser | WAP 2.0/xHTML, HTML | |
| Games | Yes | |
| Other | Flash Lite 3.0 dust and water jets resistant MP3/eAAC+/WAV/WMA player MP4/H.264/H.263 player 2.5 mm audio jack Flashlight Voice memo |