2, This WiFi camera is not a battery camera, it still needs to connect the power supply. 3, This camera support micro SD card (TF card) storage, BUT, this camera doesn’t come with a micro SD card. If you want to record or playback , you would need to prepare the micro SD card and plugin the card to the camera.
https://www.amazon.com/ZOSI-Wireless-Security-Waterproof-Detection/dp/B0862BN11F