WIRELESS & BATTERY POWERED: This approved set uses two AA batteries (not included) so you can keep it powered up and ready to use. Replace the batteries as needed for long-lasting support. EASY TO USE: Simply ensure you have inserted batteries, then just attach a mouthpiece, press the start button to initialization countdown & finally blow for 3-4 seconds once "blo" displayed. DISPOSABLE, HYGIENIC MOUTHPIECES: Every Blo breath alcohol tester comes with 10 clear BPA free mouth tips that make it easier to quickly test & dispose without sharing the same tip every time. FAST, ACCURATE RESULTS: Designed using a sensitive sensor system, our portable alcohol tester tells you if you’re over the legal limit & automatically alarms if you’ve exceeded 0.05% BAC. PERSONAL DIGITAL BREATHALYZER: This reusable alcohol tester kit (with a FREE carrying bag) monitors your Blood Alcohol Content to ensure you’re safe to get behind the wheel or to take a cab!.

Best Sellers Rank: See Top 100 in Health & Household. Country of Origin: China. : B086RXK25B. Manufacturer: BLO. Date First Available: September 10, 2020. Batteries: 2 AA batteries required. Item model number: BLO01B. Package Dimensions: 6.65 x 3.27 x 0.94 inches; 3.53 Ounces.