Solid Construction: IP 67 waterproof, anti-collision, anti-rain, anti-pressure LED flare lights is the vehicle, bicycle, ship emergency necessary tools. Multipurpose: It can be used for traffic control, as a warning light, as a rescue beacon, and in any other emergency situations. Also as a great tools for outdoor activities such as camping, hiking, boating, cycling, etc. High Visibility: The super-bright yellow or white LED array could see a mile view at night. With a usb rechargable 18650 batteries(batteries included). The battery could work for 12 hours. 2 Different light modes, including yellow emergency flash and white light. Brighter and more effective than standard LED strobe lights, it is even visible during the daytime conditions. Contains 2 switch modes: induction switch mode (the bottom strong magnet only needs to be attached to the iron to directly turn on yellow or white light, and it will automatically switch to white or yellow light when it is removed), and manual switch mode is turned on (see picture for details) Light Source: LED Bulbs Lumens: 2400Lm Power: 3W Charging method: USB Material:ABS plastic colour:Yellow+transparent shell Package Contents: 4 x Car Emergency Light 4 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.