| Batdescription 1 | Removable Li-Ion 870 mAh battery |
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| Batsize Hl | 870 |
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| Batstandby 1 | Up to 200 h |
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| Battalktime 1 | Up to 4 h |
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| Battype Hl | Li-Ion |
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| Bluetooth | 1.2, A2DP |
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| Body Hl | 95g, 18mm thickness |
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| Cam 1modules | 1.3 MP |
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| Cam 1video | No |
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| Cam 2modules | No |
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| Camerapixels Hl | 1.3 |
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| Chipset Hl | |
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| Colors | Flashy White, Black |
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| Dimensions | 89 x 49 x 18 mm (3.50 x 1.93 x 0.71 in) |
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| Displayres Hl | 120x128 pixels |
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| Displayresolution | 120 x 128 pixels (~80 ppi density) |
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| Displaysize | 2.2 inches, 40 x 40 mm, 15.6 cm2 (~35.7% screen-to-body ratio) |
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| Displaysize Hl | 2.2" |
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| Displaytype | TFT, 256K colors |
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| Edge | No |
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| Featuresother | WMA/MP3/AAC/AAC+ player
Predictive text input
Voice memo
Stopwatch
Organizer |
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| Gprstext | Class 10 |
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| Gps | No |
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| Internalmemory | 20MB |
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| Memoryslot | miniSD |
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| Modelname | BenQ-Siemens EF51 |
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| Net 2g | GSM 900 / 1800 / 1900 |
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| Nettech | GSM |
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| Optionalother | 3D surround sound |
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| Os Hl | Feature phone |
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| Radio | FM radio |
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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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| Status | Discontinued |
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| Storage Hl | 20MB storage, miniSD slot |
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| Usb | Proprietary |
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| Videopixels Hl | No video recorder |
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| Weight | 95 g (3.35 oz) |
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| Wlan | No |
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| Year | 2006, February |
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