Detailed Product Description A81 PDA with Bluetooth & Multi-media enjoyment Two-channel headphone port, included stereo, high- ... function, may, at any time the office network,stock;support Screen RotationIntegrated high sensitivity GPS receiver module;(OPTION)Integrated ... 264 and other video file playback;Picture support: JPG, BMP, GIF, PNG, etc.;Support for electronic books, electronic album;USB ...