32 GB , Photo Resolution: JPG format, 3840 x 2880 pixels Higher Definition Video Resolution: AVI format, HD 1280 x 960 pixels @ 30fps, Video Compression Mode: M-JPEG, High Speed USB 2.0 Interface Plug and Play Supporting System: Windows ME/2000/XP/Vista/7/8; Mac OS: Linux, 1-2 Hours recording from a single charge Weight: 0.9g, Size: Diameter 1.3cm x Length 14.5cm, Easy Plug and Play mode (NO DRIVER OR INSTALLATION REQUIRED!!!) Pen Function: Novelty pen, good hand/smooth writings, cool design, Outstanding meaningful gift for your friends, lovers, leaders, colleagues, classmates,etc, Rechargeable through a USB cable