Long Continuous Play-back time:72hrs with auxiliary battery pack.External Power Supply (USB DC Adator,PC USB Port).288 hrs Long Recording Time in LP Mode at 2GB /LP mode.Voice Operating Recording System(VOS).Microphone Sensitivity Control (1m,4m,8m).A,B,C,D Folder(3996 Files).Music Recording XHQ(Recording Freq. Response :100Hz~10KHz).Built-in Outer Speaker & Builti-in Microphone.Various Recording Modes (XHQ/HQ/LP).Graphic LCD display.Easy Operating Button & Navigation File Search.Play

EQ(ROCK,HOUSE,DANCE,JAZZ,BALLAD,R&B,CLASSIC,).Repeat Function (One, All. Folder).VOS(Voice-Operated Recording System).Speed Control:-20%,-10%,+10%,+20%.Auto Power Off.USB 2.0 (Auto Plug In & Play).Rechargeable Battery(Li-polymer, Built-in Charger).Battery Charge time :1.5hrs.Dimensions : 65mm×19mm×15mm (Auxiliary Battery Pack:117mm×36mm×15mm)