Brand iPega Model 01 Quantity 1 Piece Color Black Material ABS Compatible Models Samsung S3 / S4 HTC Xiaomi Application To test alcohol Features Display screen: 1.0 inch LCD; Plug the tester into cell phone and makes it under unlock until the tester sounds short buzzer voice so that LCD screen turns green; Warming up figures will jump from "10" to "0" the time finishing warm-up process; Mouth closes to the tester when 10s countdown status appears blowing air into the sensor about 3~5 seconds; It will display the result after countdown time completes; Screen displaying "Caution" and turns yellow which means alcohol is 0.02% BAC (or 0.2g/l) to 0.05% BAC (or 0.5g/l); Screen displays "Danger" and turns red which means the alcohol concentration is equal or over 0.05% BAC (or 0.5g/l) Packing List 1 x Alcohol tester