3 Pack Motion Sensor Night Light, 2000mAh Rechargeable Battery Operated LightSmart Motion Sensor Night LightCordless night light automatically turn on in the dark or in low light situations where movement is detected within 5 meters (16. 4 ft) or 180 degrees and automatic shutdown after 25 seconds of inactivity. High Capacity Battery Operated Powered by rechargeable 2000mAh battery build in. To provide up to 90 hours of illumination at lowest brightness level. It takes around 4 hours to full charge. Then , it can last up to 90