1、U Shaped Fixed Clip: The breath tester has a U shaped fixed clip, which is easy to use and easy to install. It can be easily taken and quickly tested in emergency situations. Refusing drunk driving, we are safe. 2、Three Color Indicator Light: Portable breath tester has three color indicator light, and the test results are clear at a glance. Drunken reminder, Didi alarm, you'll know if you're drunk or not by listening to the sound. 3、Type C Port and Long Battery Life: The portable digital breath tester has a Type C charging port, built in battery design, no need to replace the battery, long battery life, and can be charged for 3 months at a time. 4、Dust Cover: Add dust cover design to ensure safety and hygiene. Spiral dust cover makes it difficult for dust to enter, and hygiene protection is further improved. 5、Non Contact Blowing: The non contact blowing design eliminates the need to replace the blowing nozzle. Portable digital breath tester is a good helper. For your life and health, please avoid drunk driving. 6、Newly Upgraded Metal Casing: The casing is made of aluminum alloy material, which is resistant to falling and durable. 7、Small and Portable: Portable digital breath tester doesn't take up space, and can be used at any time with one hand. 1 x Portable Breath Tester 1 x Type C Charging Cable 1 x Hanging Rope 1 x Fixing Clip 1 x Storage Bag 1 x Manual Item Type: Portable Breath TesterMaterial: Aluminum Alloy, Electronic ComponentsBattery Type: Polymer Lithium Battery (Shipped With Built In Battery)Battery Capacity: 300mAhPower Supply Method: Type C InterfaceWeight: Approx. 148g / 5.2oz