The PCM-M10 is really compact 96 kHz/24-bit capable recorder with internal electret condenser stereo microphones, 4Gb of internal flash memory and a microSD/Memory Stick Micro (M2) slot for expanded memory. Key features of the PCM-M10 recorder include a built-in speaker, cross-memory recording, digital pitch and key control, digital limiter, low-cut filter, track mark functions, a 5-second pre-recording buffer and A-B repeat capability. The recorder includes a USB high-speed port for simple uploading and downloading of native .WAV or .MP3 format recorded files to and from a Windows or Mac PC. The M10 offers durable construction and long battery life using conventional AA alkaline batteries.