| Brand: | BenQ-Siemens |
| Model: | S81 |
| Release Date: | 2006, February |
| Size: | 2.0 inches, 31 x 39 mm, 12.6 cm2 (~24.1% screen-to-body ratio) |
| Resolution: | 176 x 220 pixels (~141 ppi density) |
| Technology: | TFT, 256K colors |
| Main Specs: | 1.3 MP |
| Main Features: | LED flash |
| Main Video: | Yes |
| Selfie Specs: | VGA videocall camera |
| Capacity: | Removable Li-Ion 920 mAh battery |
| Type: | Li-Ion |
| Expandable: | microSD (dedicated slot) |
| Dimensions: | 109 x 48 x 13 mm (4.29 x 1.89 x 0.51 in) |
| Weight: | 99 g (3.49 oz) |
| Wifi: | No |
| Bluetooth: | 1.1 |
| Nfc: | No |
| Usb: | Proprietary |
| Headphone Jack: | No |
| Network: | GSM / UMTS |
| Colors: | Black/Silver |
