Note: Causes for your glasses to shut down automatically: 1. TF memory card is full or no memory card in it. 2. Your glasses is less power. 3. There is a problem with your TF memory card.4. Work in a well-lit area to get a clear picturePower-off automatically saved When the system detects low battery ,it will automatically save the file and then shut down to ensure the safety of video filesCollect beautiful moments Wear it to record your favorite on site sports, some exciting performance, happy moments on a gathering, wedding and so on. So you can repeat these joys on your computer again and again.Protect you well Wear it to record the important conversations or videos, used for evidence, with time stamping on it, files you record can be used as strong evidences.Perfect gift for your kids As a good companion of your kids. Wearing it to record what they see when playing in the garden, in the field, on the party or in the class, help them to repeat the joy again and again or got what they lagged behind in the classSpecification: Video/photo Resolution: 1920*1080P Video Format: AVI Charging voltage: DC-5V Charging Time: About 1.5 hours Support System: Windows me/2000/XP/2003/vista Mac OS 10.4/Linux system Full Charge for Continuous video: 80min Storage: Micro SD(TF) card. up to 32GBPackage: 1.Camera glasses *1 2.Charging cable *1 3.Clean cloth *1 4.Glasses box *1 5.TF card (8GB) *1 (With Using Video that let you know how to use the glasses)