Portable Non-contact Alcohol Tester With Digital Display Screen. Specifications: Certification: CE Model Number: CSY003 Screen: LCD Digital Display Screen Display: Test Results in 2 Ways (%BAC and G/l) Use Way: Non-contact Mouthpiece Rechargeable: USB Cable Test Range: 0.00%-0.19% BAC & 0.0-1.9 G/L Warm-up Mode Countdown for 10 Seconds. Testing Mode Countdown from 10 to 00 After Warm-up Mode, Blow at This Period. Blow into the Breath Inhaler for 3-5 Seconds with Normal Power After a Deep Inhalation.  USB Rechargeable BAC Tester with Police Grade High Accuracy Package Contains: 1*Box 1*Instruction 1*USB Data Cable 1*Alcohol Tester Note: The First Use of the Tester or After a Long Time No Use, Press the Power Button and Retry Several Times if Possible. Repeatedly 2 or 3 Times to Obtain More Accurate Results. Do Not Smoke and Eat for 20 Minutes Prior to Testing. The Test Result is for Reference Only. Rechargeable with USB Cable . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.