XBLITZ ALCONTROL ULTRA ELECTRONIC BREATHALYZER ACCURACY +- 0.005 PROMIL; DETECTION RANGE 0.00 ~ 4.00‰; WARM-UP TIME 15-35 SECONDS; CALIBRATION RECOMMENDED ONCE EVERY 6 MONTHS OR EVERY 500 MEASUREMENTS; SHIPPED DIRECTLY TO THE MANUFACTURER - INSTRUCTIONS IN THE PACKAGING; POWER SUPPLY 9V ALKALINE BATTERY 5-YEAR WARRANTY; REACTION TIME 3-22 SECONDS; DIMENSIONS 125X56X24MM