Detailed Product Description Mobile Phone Model: 3GS-WIFI-Compass mobile phone.Mobile Phone Network Frequency:GSM 850/900/1800/1900 quad ... , Pinyin input, smart pinyin, strokes input, punctuation, Function:hands-free phone calls, mute, automatic redial, speed dial, IP dial, ... MP3 background play, dual-speaker surround sound shocking, support Bluetooth stereo output Video playback support 3GP, MP4, AVI ...