Wi-Fi connection is required. You can check the video with the smartphone app. It's a network camera. This is a used item. To widen the angle of view, a wide-angle lens was attached with adhesive, so there are adhesive marks on the main body. I bought it six months ago, but I stopped using it because errors frequently occurred due to unstable Wi-Fi at home. Please contact the manufacturer regarding the operation. Since this is a used item, there is no warranty, so please purchase it with your understanding. The following is an AI-generated description: 【High-Performance Battery IP Camera】 The A9 model is a battery-powered IP camera that is easy to install and suitable for use in various locations. 【Multi-functional Design】 Equipped with a mode switch, you can change the settings according to the usage scene. It can be easily installed with the included mount. 【Compact Package】 A compact package that includes the camera body, manual, and all necessary accessories. You can start using it immediately. - Model Name: A9 - Camera Type: Battery IP Camera - Color: Black - Mode Switch: Yes - Accessories: Mount, cable - Package Contents: Camera, manual, accessories Thank you for viewing. Series: Security Camera Series: Network Camera Other Features: Smartphone app compatible Other Features: Smartphone app compatible, monitoring