Function: 1. Dual LCD display. 2. Digital alcohol tester with 0.01 % BAC (0.1 g/l) increment for reading. 3. Detect range: 0.00~0.19 % BAC & 0.0~1.9 g/l. 4. Alert level calibrated. 5. Quick response and resume. 6. Auto power off. 7. Real time & alarm time. 8. Temperature. 9. Countdown & count-up timer keep the deadline of your parking. 10. Clock use 1?G13 battery (included), alcohol tester use 2 ??AA?alkaline batteries (not included) 11. Unit dimensions: 100?7?7 mm packing: QTY: 100 PCS G.W.: 6.5 KGS MEAS: 41?9.5?7 CM