Feature: 

• Built-in, Direct USB connection for quick file transfer to your PC
• Expand your memory with the micro SD card slot
• Up to 55 hours of battery life for extended recording
• Adjustable microphone range for clearer voices
• Auto voice recording reduces background noise

Specification:

• Brand: SONY
• Manufacturer model number: ICD-PX470
• Built-in memory: 4 GB
• RAM capacity: 4096 MB
• Built-in microphone: stereo (S mic system)
• Supported external memory: microSD / microSDHC card up to 2GB-32GB
• Maximum recording time: LPCM 44.1 kHz / 16 bits 5 hours 20 minutes, MP3 128 kbps 59 hours 35 minutes
• MP3 recorded tracks / hour (at 128 kbps / 4 minutes for one song): 893 songs 59 hours 35 minutes
• Accessories: 2 AAA alkaline batteries, instruction manual (Chinese), warranty card (Chinese)
  * microSD card is not included.