Simple and convenient design to analyze blood alcohol concentration (BAC) anytime, anywhere. Warm-up time: within 20 seconds, response time: within 5 seconds. It's compact enough to fit easily in a purse or pocket, on a key chain, or in your car. Results are displayed on the LCD screen. Results are clearly visible with wet fingers, even in a dark environment. Advanced semiconductor sensor technology can ensure your alcohol level is detected within seconds to ensure driving safety. Product Details: Colour: Black examination range: 0.00-0.19%BAC, 0.00-1.99BAC, 0.00-0.99mg/L, 0.00-199mg/100ml accuracy: 0.01%BAC, 0.10BAC, 0.05mg/L, 10mg/100ml Working voltage: 3 * AAA batteries (batteries not included) Warm-up time: within 20 seconds Response time: within 5 seconds Working current: 120mA Operating temperature: 5-40 (41-104) Size: 103*60*25mm Package size: 16*10*5 cm Products include: 1*Digital Alcohol Breath Tester