Livescribe 4 GB Echo Smartpen VERY IMPORTANT: Before charging your Echo smartpen, download and install the Echo Desktop software from the livescribe website. Please contact the manufacturer / seller / Amaon customer care for more details with this regard Smartpen with 4 GB of memory, redesigned with anti-roll body and rubberized smaller grip ; Capture thousands of pages of notes and over 800 hours of audio (recording time varies by audio quality setting) Share notes and recordings privately or online with 500 MB of free storage MicroUSB connector lets you transfer notes and audio to your Mac or PC Standard 3.5mm audio jack for use with your favorite earbuds