High-sensitivity, low-noise IC recorder, the SONY ICD-PX470F with S-microphone system. - Model Name: ICD-PX470F - Brand: SONY - Color: White - Connection Terminals: Microphone input terminal, headphone terminal - Features: Low noise, equipped with high-sensitivity S-microphone system - Storage: 4GB internal Thank you for viewing. I used this for recording guitar, but I am selling it due to equipment upgrades. The outer box says "2 AAA alkaline batteries," but they are used, so I will include new, equivalent batteries purchased separately.