Night Light, Euph LED Multi-Function Body Induction Night Light, PIR Motion Activated, Light Sensor, Wireless Charging Detachable Emergency Flashlight for Home Office Hotel Auto PIR Motion Detection: Built-in Wide-Angle PIR Body Sensor and Light Sensor makes the light automatically illuminates when motion is detected within 10-16 feet of the device in the dark (&lt;2Lx) Detachable Flashlight: The light body can be removed easily from the wireless-charging base and used as an emergency flashlight. Built-in polymer lithium battery supports continuous lighting up to 1 hour. Power Saving Device: Light Sensation function enables the induction light only work at dark place. The light will be off after 20 seconds of inactivity. It is pretty convenient and power saving. Intelligent AC Detection: When plugged into a power outlet, the flat light will turn on automatically if AC power is on and turn off after a while. When power is cut off, the Red light will be on after some seconds. Safe Wireless Charging: The light body is charged in a wireless way. Just put it in the charger base and plug in a power socket. Automatic power off when the battery is charged fully. It takes 8-10 hours to charge the battery fully.