Usage Tips:V16 Emergency LightMade of durable ABS materials, long service life. Use LED chips, 360 illumination to ensure the light is visible from 1km away .Can play a good rolein the emergency warning. It is an indispensable tool for the vehicle, the bicycle or any emergency situation. 2 Modes to ChooseThe emergency strobe light has manual mode and automatic mode, 2 modes switch freely. And there are 2 colors to choose from, Amber Flash and Always Bright White. Note: When manual mode is deactivated, the modeautomatic can only light up when attached to the iron object. Read the attached instruction manual for the warning light base rotation method. USB Charging & Magnetic DesignStrobe light powered by 18650 rechargeable lithium battery. It can be charged via USB cable used for 12 hours when fully charged; The warning light can beeasily attached to the roof of a car, truck, trailer or emergency vehicle. Leaves no damage to the paint! More convenient and portable. Waterproof and ApplicationIP65 waterproof, you can also use it in rainy days. No need to worry about the weather and cannot be used. Can be used as a warning light for cars, but can also be usedfor camping, car repair, travel, home use, power outages and emergencies, etc.