breath alcohol tester portable keyring mini keychain digital breathalyzer with lcd display for drinkers driver safety driving

accurate result.with advanced semi-conductor sensor technology, it gives you accurate and reliable result that you can trust in seconds. the accuracy is about 0.01%bac under proper use.. compact & lightweight--only weighing 0.92oz, it is small enough to fit in a purse or pocket or even you can use it as a keychain.