Feature Support Micro SD card( Up to 64GB additional memory) 1,Ultra-portable device. 2,One Key Noise Reduction: Push up "Noise C" key to reduce environmental noise 3,Rechargeable Battery(500mah) ,Continues recording more than 45 hours(Mp3 format) 4,Recording model: PCM WAV: 1536Kbps/1024Kbps/768Kbps/512Kbps, Mp3: 192Kbps/128Kbps/64Kbps/32Kbps 5,Work with Windows and Mac OS system (Need install wav player) 6,Time-Setting:can name the file use time, easily know which day recorded. 7,Sensor Voice Activated Mode : Start Recording when there have sound, pause when on sound( can't power on by voice , you still need press REC button as usual) 8,Built-in Speaker 9,Support 24 Country Languages: English, Russian, French, German, Hebrew, Japanese, Chinese, Dutch, Spanish, Portuguese, Arabic, Italian, Polish, Slovenian, Turkish, Korean, Romanian, Danish, Hungarian, Norwegian, Finnish, Slovakian ,Sweden. 10,Has a 1.5inch OLED Screen 11,Include a Password protection 12,Alarm Clock function 13,Multiple folders for batter organization of all your hundreds of recordings. Package Include 1 x Professional Voice Recorder 1 x USB date cable 1 x Earphone 1 x Audio Cable 1 x Instructions