What You get 4* 15W rechargeable emergency led bulb 4* hook for light bulb 1* manual 1* gift box Specification Voltage: 85-265 V Power Output: 15W color temperature: 6000-6500K Applicable lamp holder: E27 Battery: 1200mAh Application 1Battery operated light bulb for home, office, basement, garage, shop light, porch, workshop 2Outdoor camping, hiking, work light 3Emergency backup for natural disaster 4Used as magic trick bulb, party bulbs commonly Ask Q: How does the light bulb work A: When the power source cut off and the switch is ON, the backup battery in the emergency bulb will be activated If you turn off the switch, it wonAt light up Q:How to Use these LED bulbs A: These rechargeable bulb works and ordinary light bulb Just screw in anywhere you want like ceiling light fixture, table lamp etc Q: How do I test these bulbs A: You can simply press your fingertip on the top of the light bulb and hold on the thread, it will light up automatically