The recording time of portable hidden cameras varies depending on the device’s battery life and storage capacity. Some devices may have a battery life of up to 10 hours and a storage capacity of up to 128 GB, allowing for extended recording periods. Others may have shorter battery life and less storage capacity, limiting the recording time. Additionally, some devices may have motion-activated recording, which can conserve battery life and storage space by only recording when motion is detected. Storage space can be further improved by using cameras with loop recording feature. It’s important to review the specifications of the device to determine the recording time and capabilities. Furthermore, you can use our Video Storage Calculator to get an estimate based on camera’s resolution and storage capacity.