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xLOUD. Music listening time: 36 hours and 30 minutes. Video playback time up to 8 hours. Auto focus, LED flash. Up to 2.2GB user-accessible memory. TrackID. On-screen QWERTY keyboard, 12 key input. Multi-touch, up to 2 fingers supported. Handwriting recognition. Accelerometer, proximity sensor, magnetometer. ST23a network support: UMTS HSPA 850 (Band V), 1900 (Band II), 2100 (Band I) oraz GSM GPRS/EDGE 850, 900, 1800, 1900. 1460 mAh - minimum battery capacity. 1GB System memory used for firmware, 766MB phone memory for downloaded applications, and 2.2 GB internal storage used for music, pictures, movies, and some application data. 3.5 mm audio jack.