Key features

• •Free Gift: Come with 4 Mouthpieces for you to replace and 2-in-1 window breaker. With a high-strength steel hammer head of the built-in window breaker, you can quickly break the window to evacuate in an emergency moment. To get more Mouthpieces please search B0769CMPXQ
• •Built-in Rechargeable Li-ion Battery: Built-in 350 mAh lithium battery, you can use the equipped with micro USB data cable to charge the alcohol tester, the input power is 5V-1A, which can be charged with a general mobile phone charger or computer USB interface
• •Alarm Function: When the alcohol content test value is higher than 0.05% BAC, the warning lamp lights up and emits a continuous buzzing, warning the driver. Warm Tip: Don't Drive after Drinking
• •Clock Display and Reading Memory Function: The device can be used to view the current time while it is on standby. Test results memory function, you can store the last 10 test results, so that you could see the comparison. 4 units of measurement provided (%BAC, ‰BAC, mg/l, mg/100mL)
• •Easy to take anywhere: The breathalyzer has a compact size (4.72"*2.56"*0.94"), which allows you to carry it anywhere and anytime. We provide 1 year warranty, please feel free to contact seller support