| General | |
| Manufacturer: | Nokia |
| Model: | 3720 classic |
| Year: | 2009 |
| Capacity battery (MAh): | 1050 |
| Measurements | |
| Dimensions (mm): (width x height x thickness) |
47 x 115 x 15.3 |
| Weight (g): | 94 |
| Processor | |
| Memory | |
| Random access memory (RAM) (MB): | 64 |
| Read-only memory (ROM) (MB): | 32 |
| Communications | |
| Phone: | GSM 1800, GSM 1900, GSM 900 |
| Bluetooth: | 2.1 |
| Other: | CSD, EDGE, GPRS, HSCSD |
| Multimedia | |
| Screen Size: | 2.2 |
| Screen Resolution (px): | 240 x 320 |
| Rear camera (Mp): | 2 |
| Speaker: | mono |
| Output of earphones: | 2.5 |
| Other: | FM-radio |
| Management and input | |
| Buttons: | navigation buttons, physical buttons, numerical keyboard |
| Extension | |
| Memory Cards: | microSD, microSDHC |
| Connectors: | microUSB |
| Additionally | |
| Features: | Standard of protection IP54 from shock and moisture. |