V8 HD 1080P Invisible Hidden Camera Long Time Recording latest Spy Pens: How to use: Start Video taking -- Press the top function button until the blue indicator turns on, the pen camera will start video-taking after the blue light flash 3 times. The light would be off when the video-taking is going on. Press the function button 1 more time, video taking ends, the blue light would be back again ( stand by mode ) Wroking while charging-- Insert micro SD card, connect to 5V USB power supply with cable, or Charge Pal, blue light gives 3 flashes and the device start working, and we also can adjust it manually to other mode. Product features ? High quality image FULL HD 1080P DV DC ? Compact, and portable hand-held DV DC ? Video format: 1920X1080 1280X720P ? Support recording while charging ? Support up to 64G T-flash card (If 64G is needed, use this device to format 64G TF card once before use; certain brands do not support 64G due to incompatibility) ? Built-in lithium battery supporting continuous shooting for 75 minutes Related Parameters Video format AVI Video coding M-JPEG Video resolution 1280X720P 1920X1080P Frame rate 30 fps Player Player comes with the operating system or OS or mainstream audio and video playback software Picture format JPG Imaging scale 4:3 Support system Windows me/2000/xp/2003/vista; Mac os; Linux; Battery capacity 170mAh Working time About 75 minutes Charging voltage DC-5V interface type Mini 8Pin USB Storage support TF card Battery type High capacity polymer lithium battery