EASY TO USE: This very portable breath tester can be with you at all times. Keep it either on your keyring, handbag, purse or on your belt hook. DURABLE COMPACT DESIGN: The tester has been designed with the motorist in mind. ACCURATE READINGS: This tester has been used and appreciated as a premium product by motorists in the USA and around the world. LARGE LCD SCREEN: The background light helps you to see the read-out clearly. So avoiding any confusion and keeping you safe to go. DIGITAL ALCOHOL BREATHALYZER: This is the latest in breathalyzer design. Plug and Play. Not complicated to set-up. Specifications: Color: Black+Gray, 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 Tester, 4 x Breath inhaler Case. Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement.