Features: Built-in battery power supply, Wifi connection, 100% completely wireless. Built-in 5200 mAh battery pack , support direct charging. PIR+ intelligent detection, quick start recording. 3MP resolution, high-definition image. Infrared fill light, clear image at night. Built-in MIC and speaker, two-way voice intercom. IP66, suitable for both indoor and outdoor. Specification: Name: Battery camera. Pixel: 300 million. Image Sensor: 1/3.2' CMOS Sensor. shutter: Shutter adaptive. Lens: F2.6, 3.4mm. Day and night conversion mode: ICR infrared filter type. Digital noise reduction: 3D digital noise reduction. Dynamic Range: Digital wide dynamic. PIR range: 7 m distance, 120 degrees. Infrared irradiation distance: 8m. Video compression standard: H.264/H.265. Stream: HD and SD two files. Audio encoding format: AAC/G711A. Maximum image size: 2048×1536. Frame rate: 15 frames/sec. Image settings: Adaptive. BLC: support. Smart alarm: PIR+Humanoid, motion sensor detection alarm. Alarm information: Alarm information push. Two-way voice: Built-in microphone and speaker. Type: 18650 rechargeable lithium battery. Capacity: 5200mAH (built-in battery)/(4W solar panel optional). Use time: 6 months per charging cycle (average wake up 3min per day). Storage interface: Micro SD card (support up to 128G). Cloud storage: Support. Wireless system: 802.11b/g/n. encryption: WEP, WPA, WPA2. Working temperature and humidity: -20℃~50℃,＜ 95%(No condensation). Power Adapter: USB DC 5V/1A. Package included: 1 x 3MP Solar Surveillance Camera 1 x Solar Panel (Optional)