-system: android 9.0, ram: 2gb, rom:16g-expand rom: 32g max-3g/wifi: support-rds: support-screen size: 9 inch-screen resolution: 1024*600-material type: aluminum + plastic-video type: vi, mp4, mp5,flv, pmp, rm, rmvb, mpg-audio type: support lossless audio play. ape/flac/mp3, etc.-touchable screen: support-gps navigation: support-spport: 1080p full hd display- speaker impedance: 4ohm- maximum power: 45 w * 4- volume control: +/- 14 db (under 100hz treble 10 khz)- fm tuning range:-tuning range: 87.5-108 mhz-applicable sensitivity: 12db-snr: 50db-stereo