Works on batteries and solar power. One day of sunlight keeps the camera running for several days. This unparalleled performance is achieved through 6 batteries, 8W solar panels and intelligent standby mode, and 6 more durable batteries. No wires, connect to the network by inserting a 4G SIM card, place it anywhere around your home, without the need for a power source. You can access instant audio and video communications anytime, anywhere. Ultra-low power consumption and long standby time. Power saving function. Smart power saving function, solar charging function, very practical and environmentally friendly. Waterproof and moisture-proof, can get energy from light even on rainy days, extending battery life. Don't worry about bad weather outside. TF card and cloud storage are available, insert TF card (not included) to watch video playback. Users can add multiple cameras to implement multi-device monitoring. Supports two-way intercom, remote monitoring, built-in microphone, speaker, users can monitor through the mobile app, and can achieve real-time remote audio and video intercom.