Rechargeable Battery: The battery is charged by a standard usb cable. Charging time: Apprx 3 hours from empty to full. Estimated battery life per charge: 9-12 weeks (varies depending on volume of motion detection recordings). 
 
Truly Wire-Free & Weatherproof: The outdoor IP camera works on 2.4GHz WiFi connection. No wiring hassles. IP65 weatherproof design.
 
PIR Sensor and 33ft Night Vision: Smart PIR sensor detects motion and triggers instant alertsto your Smartphone. *No cloud storage fees when a SD Card is inserted. Infrared LEDs illuminate up to 33 feet for HD clear night vision. 
 
2-Way-Audio & Remote Access: With a built-in microphone and speaker you can chat directly to delivery drivers, visitors and pets via the free Reolink App and listen in live to the cameras feed and sound from anywhere in the world. You can also playback the videos anywhere anytime. No expensive annual subscription fees when a SD Card is inserted.