Product Descriptioncost efficiency Black LCD Display digital breath breathalyser alcohol tester 1.LCD display testing results recalling2.Wide measure range:0.00-0.05%BAC or 0.00-0.25mg/l3.Three LCD display,apart display 0.02%BAC and 0.05%BAC.4.Sensor: advanced semiconductor oxide alcohol sensor5. Detect range: 0.00-0.19% BAC / 0.0-1.9 g/l6. Warm-up time: within 10 seconds7. Respond time: within 5 seconds8. Operating temperature range: 10°C-40 °C9. Environmental temperature: 40%-90%10. Power input: use 2x "AAA" alkaline batteries (not included)11.It has backlight and Key Chain.12. Two color choose:Black and Gray