DescriptionDesigned for car driving, used on the sun visor, will not obstruct driver's view. Made of premium material for long time and durable use. It has a simple design, but very practical in use, giving you a good using experience. Also can be a good gift choice for your friends, they will like it.Features-Color: White-Material: plastic, electronic components -Size: 12.00X6.30X2.60cm/ 4.72X2.48X1.02in Error floating: 0-30% Startup warm up: 120s Working voltage: 5V Battery: 850mAh Charging time: about 3h Working time: about 180-240min - Can accurately detect carbon dioxide (CO2), (HCHO), carbon monoxide, air quality, chemical pollutants in the air in real time. - One key turn on/off, full control. LED display, display more clearly. - This air quality monitor is suitable for home air detection, car air detection, maternal and child room air detection and public place detection. - Perfect air quality monitor for indoor homes, schools, offices and other occasions. - Simple in structure, easy to use, not easy to deform, you can use it with confidence.