... , plug and play, no drive neededClear voice recording4GB internal flash memorySupport WAV FormatRechargeable lithium battery, charges from USB 2.0 ... to 5 hours continuous recording after one charging2in1 combination: 2GB Memory Stick + Voice RecordingCompatible system: Windows 98, 98SE, ME and ... : If the voltage is too low,the pilot lamp will flash fast, when charge ,the light flashes in mornal ,After ...