Description: Material: Plastic Size: 6.3*2cm / 2 *0.78" Color: White, Black Feature: 1. The portable carbon monoxide uses a high-precision sensor that can quickly and accurately detect the concentration of carbon monoxide in the to ensure the breathing safety of you and your family. 2. The device is small and easy to carry, suitable for use at home, in the car or when traveling, monitoring quality anytime and anywhere to prevent potential dangers. 3. Ensure that users can receive warnings in time and take measures to their own safety in an emergency. 4. The product has passed multiple international safety certifications, is stable, and provides services. 5. Simple operation, one-button start design is suitable for people of ages, equipped with a clear LED display, real-time display of carbon monoxide concentration values. Note: 1. Manual measurement may have an error of 1-2cm. Please understand, thank you. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. Package includes: 1*Portable carbon monoxide