| Batdescription1 | Removable Li-Ion 920 mAh battery |
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| Batsize Hl | 920 |
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| Batstandby1 | Up to 320 h |
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| Battalktime1 | Up to 4 h 50 min |
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| Battype Hl | Li-Ion |
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| Bluetooth | 1.1 |
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| Body Hl | 99g, 13mm thickness |
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| Cam1features | LED flash |
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| Cam1modules | 1.3 MP |
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| Cam1video | Yes |
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| Cam2modules | VGA videocall camera |
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| Cam2video | |
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| Camerapixels Hl | 1.3 |
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| Chipset Hl | |
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| Colors | Black/Silver |
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| Dimensions | 109 x 48 x 13 mm (4.29 x 1.89 x 0.51 in) |
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| Displayres Hl | 176x220 pixels |
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| Displayresolution | 176 x 220 pixels (~141 ppi density) |
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| Displaysize | 2.0 inches, 31 x 39 mm, 12.6 cm2 (~24.1% screen-to-body ratio) |
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| Displaysize Hl | 2.0" |
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| Displaytype | TFT, 256K colors |
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| Featuresother | MP3/AAC player
Video telephony
iTap
Stopwatch
Organizer |
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| Gps | No |
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| Internalmemory | 30MB |
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| Memoryslot | microSD (dedicated slot) |
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| Modelname | BenQ-Siemens S81 |
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| Net2g | GSM 900 / 1800 / 1900 |
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| Net3g | UMTS 2100 |
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| Nettech | GSM / UMTS |
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| Os Hl | Feature phone |
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| Radio | No |
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| Released Hl | Released 2006, February |
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| Sensors | |
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| Sim | Mini-SIM |
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| Speed | Yes, 384 kbps |
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| Status | Discontinued |
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| Storage Hl | 30MB storage, microSD (dedicated slot) slot |
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| Usb | Proprietary |
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| Videopixels Hl | Video recorder |
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| Weight | 99 g (3.49 oz) |
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| Wlan | No |
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| Year | 2006, February |
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