Features 1、High Accuracy Sensor: 3 in 1 air quality monitor with high accuracy electrochemical sensor for detecting temperature and humidity. Ensure healthy breathing by real time monitoring of concentration in the air. 2、Long Lasting Power Supply: Equipped with USB power cable for continuous power supply, or use 2 x AAA batteries(without). With 2 AAA 1000mAh batteries, the monitor can work for approximately 100 hours. 3、Portable Compact Design: This air quality monitor features a convenient hook and loop tape and hanging rope, making it easy to place on desks or hanging on wall for quick and easy monitoring. 4、Applicable Scenes: Perfect for a variety of settings, this air quality monitor is ideal for travel, outdoor camping, RV trips, and use in indoor spaces such as living rooms, bedrooms, kitchens, bathrooms, garages, and more. 5、Clear Display Screen: The monitor has a clear and easy to read display screen to show real time data, temperature, and humidity levels, ensuring you breathe in healthy air. Specification Item Type: 3 in 1 Temperature Humidity Meter Material: ABS Battery: 1.5V AAA battery x 2(without) Package List 1 x Air Quality Detector 1 x Lanyard 1 x Hook and Loop Strap 1 x USB Power Cord 1 x Manual