Features: Advanced flat-surface alcohol sensor. Fast response. Intelligent MCU control. Large scope. Automatic warning beyond preset limit. Safe. Accurate. Reliable. Works EVERY time. Digital output. Large LCD display. Energy saving design. Alert low battery. Instructions included. Five mouthpieces included. (Mouthpiece not required - just blow into grooves for 3-5 seconds). Compact and lightweight, fits easily in a purse or pocket. Easy to use. Specifications: Detailed on-screen instructions: Wait, blow, test, read Measurement range: 0.00-0.20BAC%; 0.00-2.00g/L, 0.00-2.00BAC; 0.00 to 1.00mg/L; 0.00-200mg/100mL Alarm level: 0.05BAC%; 0.50g/L; 0.50BAC; 0.25mg/L; 50mg/100mL Precision: 10% of F.S. Supply by: 3x AAA batteries. (Batteries are not included). LCD screen size: 1.7". Color: Black Product size: 103 x 75 x 28mm Product weight: 60g Package size: 158 x 105 x 50 mm Package weight: 133g Package includes: 1 x Breathalyzer 5 x Mouthpieces 1 x User Manual