It’s battery-free, using your phone's battery with a low power consumption. 

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Dear customer: If you define our time-lapse camera as a way of taking a picture in 5 seconds to combine into a recorded video, you can run the machine for about 2 months with the use of brand new alkaline 4 AA batteries. But what you need to ensure is your memory card. The size of the video formed under the attributes you set is smaller than the volume of your memory card. Otherwise, the TF card will automatically shut down when the stored information is saturated. Hope our answer is helpful to you. best wishes, Dsoon 

Dear customer: Hello! Our Dsoon time-lapse camera can take pictures and videos in time-lapse and can also take pictures and videos regularly and automatically and automatically connect to AVI video. Below are the time ranges they can set, you can refer to it. … see more Dear customer: Hello! Our Dsoon time-lapse camera can take pictures and videos in time-lapse and can also take pictures and videos regularly and automatically and automatically connect to AVI video. Below are the time ranges they can set, you can refer to it. A.Timelapse(Photo) is timelapse for photo ,can be set to take 1 photo every 3 seconds to 24 hours, and automatically connect photos to generate time-lapse AVI videos in real time; B.Timelapse(Video) is timelapse for video , it can be set to record a short video of 3 seconds to 120 seconds every 3 seconds to 24 hours, and automatically connect to AVI video; C. Timing Photo is Timing for photo, it can be set to take 1 photo every 3 seconds to 24 hours; D. Timing Video is timing for video, it can be set to record a video from 3 seconds to 120 seconds every 3 seconds to 24 hours. Hope our answer will be helpful to you. best wishes 

According to the instructions, it is quite flexible in manual mode. I personally have not done this.