Features: Connect to Computer via Micro-USB, One-Touch Recording, Designed for Entry-Level Operations, Self-Powered Electret Condenser Mic, Omnidirectional Polar Pattern, Coppertop 1.5V AAA Batteries, 4GB, Stores Up to 1570 Hours of Audio, Internal 4GB Memory, WMA Format, Internal Mono Microphone, 3.5mm Headphone Jack