Bea-fon SL645 vs Bea-fon SL450
| Type | Clamshell | Clamshell |
| Dimensions | 114.80 x 60.00 x 19.10 mm | 101.00 x 51.50 x 18.50 mm |
| Weight | 118.00 g | 70.00 g |
| Display size | 2.80" | 2.20" |
| Display | Color / TFT 64k colors 240 x 320 px (2.80") 143 ppi | Color / TFT 64k colors 176 x 220 px (2.20") 128 ppi |
| Display protection |   | |
| Additional display | Color / TFT 128 x 128 px (1.77") | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 220 min. (3.7 h) | 2G: 480 min. (8.0 h) |
| Stand-by (max.) | 2G: 250 h. (10.4 days) | 2G: 250 h. (10.4 days) |
| Standard battery | Li-Ion 1000 mAhBuy powerbank
| Li-Ion 800 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Phonebook memory | 250 places | 200 places |
| Memory cards |  microSD, microSDHC up to 16 GBBuy memory card | |
| Touchscreen | | |
| SAR (10g) | 1,748 W/kg | 0,447 W/kg |
| DualSIM | | |
| SIM cards standard | SingleSIM(miniSIM) |  |
| Other names | - | - |
| GSM frequencies | 900 1800 | 900 1800 |
| UMTS | | |
| LTE standard | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
CAMERAS - FRONT
| First camera | | |
| Photo matrix | 3 Mpx | nd |
| Optical zoom | | nd |
| Flash | LED | nd |
| Dual-colour LED flash | | nd |
| Additional | FF | nd |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | | |
| HSCSD | | |
| HSDPA | | |
| HSUPA | | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | | |
| HDMI | | |
| WiFi | | |
| WiFi frequencies | | |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | | |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | | |
| Swype | | |
| e-mail client | | |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | | |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |