XIANQI Simple and conveniently design for analysis Blood Alcohol Concentration (BAC) at anytime and anywhere. Warm-up time: within 20 seconds, respond time: within 5 seconds. With small size, it easily fits in a purse or pocket, hung on a keychain, or placed in car. The result is displayed on the LCD screen. Even in a gloomy environment, the result will be seen clearly with a wet finger. Advanced semi-conductor sensor technology ensures your alcohol level is found out in seconds to be sure if it's safe to drive. Product Details: color: black Detection 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 Battery (Battery 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*25 mm Package Dimensions: 16*10*5 cm product includes: 1*Digital Alcohol Breath Tester