The following data is based on the test of video duration calculation of 64G TF card. The results will be different in different scenarios. For example, recording for static and dynamic picture are not the same. If you set different parameters, the results may different. The data is calculated on the camera’s default stream settings, just for your reference. 1. It can record 16 days when C38 is in 720P mode. 2. It can record 18 days when C7815WIP is in 720P mode. 3. It can record 14 days when C37A is in 960P mode. 4. It can record 10 days when C50S is in 1080P mode. 5. It can record 8 days when C38S is in 1080P mode. Note: You can choose high-bit stream or low stream image, they take different amount of capacity. Please refer to the specific settings [IP Camera Web Client Function Instructions] SD card record settings