1. dual mode: constant light mode and automatic lighting mode.<br> 2. automatic lighting mode:automatically turns on when a human motion within 13 feet is detected in a dark environment, and closes automatically after 15 seconds. If no movement is detected, the light will automatically go out when there is a light around.<br> 3. rechargeble: built-in 500mAh rechargeable battery, lasts for maximum 8 hours in constant light mode and one month in automatic lighting mode.<br> 4. power saving: no need to charge the baterry frequently when you use the automatic lighting mode.<br> 5. easy to install and hand-held portable.<br> 6. multiple usage scenarios: bedside, drawers, cabinets, refrigerator doors, stairs, corridors,hallway,living room and so on.<br> 7. 4m Sensing distance, 120?? Induction range.<br>