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                                        BenQ-Siemens E81 | 
                                    
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| 
                                         Launch 
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| Announced | 2006, July | |
| Status | Discontinued | |
| 
                                         Network 
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| Technology | GSM / UMTS | |
| 2G | GSM 900 / 1800 / 1900 | |
| 3G | UMTS 2100 | |
| Speed | Yes, 384 kbps | |
| GPRS | Class 10 | |
| Edge | No | |
| 
                                         Body 
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| Dimensions | 99.8 x 46.7 x 16.7 mm (3.93 x 1.84 x 0.66 in) | |
| Weight | 90 g (3.17 oz) | |
| SIM | Mini-SIM | |
| 
                                         Display 
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| Type | TFT, 256K colors | |
| Size | 1.8 inches (~21.9% screen-to-body ratio) | |
| Resolution | 176 x 220 pixels (~157 ppi pixel density) | |
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                                         Memory 
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| Card Slot | microSD (dedicated slot) | |
| Internal | 16 MB | |
| 
                                         Camera 
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| Primary | 1.3 MP, LED flash | |
| Video | QCIF | |
| Secondary | No | |
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                                         Sound 
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| Alert types | Vibration; Downloadable polyphonic, MP3 ringtones | |
| Loudspeaker | No | |
| 3.5mm Jack | No | |
| 
                                         Comms 
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| WLAN | No | |
| Bluetooth | Yes | |
| GPS | No | |
| Radio | No | |
| USB | v2.0 | |
| 
                                         Features 
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| Messaging | SMS, MMS, Email | |
| Browser | WAP 2.0/xHTML | |
| Java | Yes, MIDP 2.0 | |
| 
                                         Battery 
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| Battery | Removable Li-Ion 900 mAh battery | |
| Stand-by | Up to 300 h | |
| Talk time | Up to 5 h | |
| 
                                         Misc 
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| Colors | Lucent Black | |