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| Overall | Nokia E51 | Sony Ericsson K660 |      | ||||
Usability |
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| Display Resolution | 240x320px | 240x320px | |||||
| Display Color | 16M | 256K | | ||||
| Display Technology | TFT | TFT | |||||
| Input / Navigation | Navigation Joystick / Button Numeric Keypad | Navigation Joystick / Button Numeric Keypad | |||||
| Talk Time | 4.3h | 9h | | ||||
| Stand-by Time | 310h | 330h | | ||||
| Vibration | Available | Available | |||||
| Ringtones | MP3 64 Channels Polyphonic | MP3 40 Channels Polyphonic uncertain | |||||
Hardware |
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| Processor Speed | 369MHz | Proprietary | | ||||
| RAM | 96MB | ||||||
| External Memory | microSD | Memory Stick Micro (M2) | | ||||
| Internal Memory | 130MB | 32MB | | ||||
| Camera Resolution | 2 Megapix | 2 Megapix | |||||
| Video Recording | Available | Available | |||||
| Video Telephony | Available | ||||||
| Battery | 1050 mAh | 950 mAh | |||||
Software |
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| Operating System | Symbian v9.2 | Proprietary | | ||||
| Developer Platform | Series 60 3.1 Edition | ||||||
| Java | MIDP 2.0 | MIDP 2.0 | |||||
Connectivity |
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| Compatible Networks | HSDPA 2100 HSDPA 850 GSM 1800 GSM 1900 GSM 850 GSM 900 | HSDPA 2100 GSM 1800 GSM 1900 GSM 850 GSM 900 | | ||||
| WLAN | Wi-Fi 802.11b/g | ||||||
| USB | v2.0 | v2.0 | |||||
| Bluetooth | v2.0 | v2.0 | |||||
| EDGE | Class 32 | Class 10 | | ||||
| Infrared | Available | ||||||
| HSCSD | Supported | Supported | |||||
| Radio | FM | FM RDS | | ||||
| GPRS | Class 32 | Class 10 | | ||||
| PTT | Supported | ||||||
Ergonomics |
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| Dimensions | 114.8x46x12mm 4.52" x 1.81" x 0.47" | 104x47x15mm 4.09" x 1.85" x 0.59" | | ||||
| Height | 114.8mm (4.52") | 104mm (4.09") | | ||||
| Width | 46mm (1.81") | 47mm (1.85") | | ||||
| Depth | 12mm (0.47") | 15mm (0.59") | | ||||
| Weight | 100g (3.53oz) | 95g (3.35oz) | | ||||
| Form Factor | Candy Bar | Candy Bar | |||||
Various |
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| Ballpark Price Estimate | 212.00 to 260.20 US$ | 177.20 to 217.40 US$ | |||||
| Reviews | TechRadar [ 90/100 ] Phone Arena [ 85/100 ] CNET Asia [ 80/100 ] TechRadar [ 80/100 ] Good Gear Guide [ 60/100 ] GSMArena mobile-review MobileBurn | TechRadar [ 80/100 ] Register Hardware [ 80/100 ] TrustedReviews [ 70/100 ] CNET Asia [ 67/100 ] Good Gear Guide [ 65/100 ] GSMArena mobile-review |
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