Used a few times. Please refrain from purchasing if you are concerned about minor imperfections. Operation confirmed. *microSD card not included. Please prepare your own. 【4K Quality & 126° Ultra-Wide Angle】 Adopts a 4K high-definition camera lens with a 30fps video frame rate. Also supports audio recording. The 126° wide-angle lens allows you to capture the entire room with a single camera. 【Ultra-Long 20-Day Standby & Long-Time Recording】 Built-in 2300mAh large-capacity battery, capable of 20 days of standby in low-power mode. When connected to an external power source, continuous 24-hour recording is possible, achieving 8-9 hours of continuous recording on a full charge. 【DV Mode & AP Mode】 Can record independently even without WiFi, automatically saving to the SD card. AP mode allows you to connect your smartphone to the camera's hotspot without WiFi and view the footage through the app (please use within a distance of 5 meters). 【WiFi Mode & Two-Way Communication】 Connects to your home WiFi and allows remote operation, real-time monitoring, and viewing on your smartphone via the "O-KAM" app. Equipped with a microphone and speaker, it's very convenient for when you leave your children at home and can remotely communicate with them through the mini camera via Wi-Fi or smartphone. 【Motion Detection & Smartphone Notification & AI Human Detection】 The security surveillance camera has a motion detection function, and when the sensor detects movement, it sends an alert message to your smartphone. 【Night Vision Recording & Loop Recording】 Built-in six invisible infrared lights, which switch to night vision mode depending on the ambient light, operating silently without emitting sound or light, day or night. Also, when the recording data is full, the recorded images are automatically overwritten from the oldest. The camera supports microSD cards up to 128GB (microSD card sold separately). 【Multiple People Simultaneous Remote Monitoring & One Mobile Phone Can Connect to Multiple Surveillance Cameras】 The live screen can be shared with all family members, allowing multiple people to check the monitoring situation simultaneously. 【Various Locations & Includes a Strong Magnetic Stand】 The camera comes with a strong magnetic stand. By attaching the hidden camera to the stand, you can install it without construction, on walls, ceilings, or under desks. It can record evidence of burglaries, meeting records, security measures, domestic abuse, and outdoor DV. Can be installed in homes, shops, warehouses, convenience stores, and gardens, and real-time footage can be viewed from the office, home, or while traveling. Also ideal for security and pet observation.