Features: brand new and high quality Simply insert the two included AAA batteries, power on your breathalyzer and begin testing. It's that easy; Your BAC results are displayed 5 seconds later on a bright LCD screen. High-sensitivity alcohol sensor, fast detection result. Small size, only 10cm long, easy to use, light in weight, small in size and easy to carry. Respond quickly, recover quickly, and detect quickly and conveniently. With removable blow mouth,you can clean or replace it regularly. Specifications: Material:ABS Size:Approx.10.3x6x2.5cm/4.06x2.36x0.98in Packing:OPP Bag,Box Power By:AAA Battery(not included) Net Weight:76-110g Package Includes: 1Set Alcohol Breath Tester note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.