Features: This is a digital breath alcohol analyser tester. Digital alcohol test with audible alert. Auto power off, quick response and resume. The digital alcohol breath tester has a key chain, very portable to carry out. A simple method to analysis Blood Alcohol Concentration at anytime and anywhere. Specifications: Specifications: Color: Black Item size: 110*70*25mm Battery: 2"AAA" alkaline batteries (NOT INCLUDE) Sensor: advanced semiconductor oxide alcohol sensor Range: 0.00-0.19%BAC & 0.0-1.9g/l (or 0.00-0.95mg/l BRAC) Accuracy: 0.01% BAC(0.1g/l) Packing content: 1 x Digital Alcohol Breathalizer Tester 4 x Breath inhaler Case Note: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. The color of the actual items may slightly vary from the above images due to different computer screen, thanks for your understanding.