The video recording pen camera stores all video files with the built-in micro sd card that can be removed or replaced. If you need to save longer minutes of video clips, you can replace it with a larger micro SDHC class 10 sd card but not larger than 32GB.
Camera Pen Features
Real-time Video Recording;
Portable Pen Camera Video Recorder with Photo Shooting Function
Power supply: Built-in rechargeable battery (Installed)
Provides 60 – 120 minutes of digital capturing function.
Memory: Ex-slot for micro SD/TF memory card support up to 32GB. The package did not come with a Micro SD/ TF Memory Card.
Use for still images, video, or as a portable storage flash drive.
Includes Charging / Data USB Extension Cable (Pen is not compatible with Windows 10. A memory card reader will need to be used)
PC and Mac Compatible 2.0 USB (with included USB cord)