Windows gsm wifi phone,wifi mobile phone, wifi sip phone support voip sip

W&M  Telecommunication Windows gsm wifi phone,wifi mobile phone, wifi sip  phone support voip sip Model WM650 Product FeaturesLCD2.8” TFT touch screenRF BandGSM/GPRS/EDGE 850/900/1800/1900MHzCamera2 Mega pixel，Shooting static and dynamic profileExtension CardmicroSDâ„¢ slotCPUintel920T  PXA312  640MHz OSWindows Mobile® 6.1 ProfessionalROMROM: 256 MBRAM: 128 MBDimension104.5mm (L) x 59mm (W) x 15.75mm (T)Weight110g (battery included)LCD2.8” TFT-LCD Touch Screen, QVGAVowlan phoneSuport SIP IEEE 802.11b/g, Codec: G711a/u-law, G.729a/b, G.723,G.729,G.726Connection- Bluetooth ®2.0 connect EDR and wireless headphoneA2DP- Wi-Fi®: IEEE 802.11 b/g- Triad 11-pin mini-USB 2.0 and voice slotCamera2 MegaVoiceBuilt-in microphoneRingtone format：·                           MP3, AAC, AAC+, eAAC+, WMA, WAV, AMR-NB, AMR-WB and QCP·                           40 chord and standard MIDI format 0 and 1 (SMF)/SP MIDIBattery1100mAh Li-ion batteryStand-by/Talking-TimeUp to 270 hours/Up to 480 minutes(Depending on network and phone usage)Memory CardmicroSDTM memory (SD 2.0 compatiable)AC Chargervoltage range: 100-240V AC, 50/60Hz, DC output : 5V and 1A