One-button operation, easy to use; test completes in 22 seconds. LCD display for clear reading. Audible alerts vary based on breath alcohol concentration levels. Features highly sensitive semiconductor sensor for fast, accurate results. Powered by 3 AAA batteries (batteries not included). Product Name: Alcohol Tester Detection Method: Semiconductor gas sensor Measurement Range (Breath Alcohol): 0–200 mg/100mL Operating Current: 120 mA Measurement Target: Breath alcohol concentration Battery Type: 3 x AAA (1.5V) Sensor Replacement: Not supported Operating Voltage: 4.5 V Operating Temperature Range: –5°C to 45°C Weight: 75 g Storage Temperature Range: –20°C to 50°C Color: Black Material: Plastic Dimensions: 120 mm × 56 mm × 17 mm Package Contents: 1 × Alcohol Tester Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 mg/100mL.