Folder in soft 300D polyester, graphite finishing with a built-in, external auxiliary battery of high charge capacity -4,000 mAh-. In sober design, with magnet closure and metal plate for logo. Plenty of storage compartments to store business cards, USB flash memories, plus holders for smartphones and tablets and LED charge indicators inside. Including a 20-page A4-size notepad. The easy access to the charging station via micro USB cable - included- make of this folder the perfect gadget for business and studying.