Features: brand new and high quality Easy to operate, easy to carry, save space for you, you can put it in your pocket or bag when you are partying with friends. The advanced high-precision sensor will immediately provide you with the most accurate value, and comes with ten spare Mouthpieces for you and your family or friends to use. Night display and give you professional accuracy for safe driving. Make alcohol testers turn off automatically to save power when you have completed the test for 5 seconds. Professional breathalyzer is overwhelmingly easy to use. Breathalyzer just one-button operation, it's easy to turn the device on and test it in seconds. Come with 3 Mouthpieces, meeting different needs, Powered by 2AAA batteries( not included but commonly available). Specifications: Material: ABS Size: 113x68x35mm/4.4x2.7x1.4 in Thickness: 26mm/1 in Color: Black/Blue Package Includes: 1x Breath Alcohol Tester 3x Mouthpieces note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.