Windows 6.1 wifi sip voip phone,voip gsm phone sup

Product Features: Model: WM680 wifi sip voip phone,voip gsm phone LCD:2.8 TFT touch screenRF Band:GSM/GPRS/EDGE 850/900/1800/1900MHzCamera:3.2 Mega pixel,Shooting static and dynamic profileExtension Card:microSD slotCPU: Marvel PXA310 624MHzOS:Windows Mobile® 6.1 ProfessionalInternal storage: 256 MB RAM: 128 MBDimension:104.5mm (L) *59mm (W) *15.75mm (T)Weight:100g (battery included)LCD: 2.8 TFT-LCD Touch Screen, QVGAVowlan phone: Suport SIP IEEE 802.11b/gCodec: G711a/u-law,G723.1,G729a/b,G729,GSMConnection:- Bluetooth ®2.0 connect EDR and wireless headphoneA2DP - Wi-Fi®: IEEE 802.11 b/g - Triad 11-pin mini-USB 2.0 and voice slotVoice:Built-in microphoneGPS:Built-inRingtone formatMP3, AAC, AAC+, eAAC+, WMA, WAV, AMR-NB, AMR-WB and QCP 40 chord and standard MIDI format 0 and 1 (SMF)/SP MIDIBattery: 1100mAh Li-ion batteryStand-by/Talking-Time: Up to 270hours/Up to 480 minutes(Depending on network and phone usage)Memory Card: microSDTM memory (SD 2.0 compatiable)AC Charger: voltage range: 100-240V AC, 50/60Hz, DC output : 5V and 1A