The C-Pen 2-1 writing storage experience. A black inkballpoint pen with a universal refill, with a 32 GB USB-C memory drive thoughtfully engineered into the pencap. Save up to 4,000 pictures, 7,000 songs or 40h of video. Compatible: Windows 7, 8 & 10 / Mac OS X v10.6 and higher. One Year Exchange Warranty.