Two detection modes to meet different needs Precise mode: requires the installation of a mouthpiece; measurements are more accurate for individual readings. Quick check mode: does not require a mouthpiece; suitable for quickly screening alcohol presence across multiple people. Portable design with accuracy Compact, lightweight device featuring precision semiconductor technology. Delivers accurate readings and alerts when alcohol levels are excessive, ideal for onthego testing. Power and battery USB rechargeable lithium battery, 800 mAh. capacity battery provides extended use on a full charge. Smart sensing and accuracy Builtin smart chips and sensitivity sensors enhance measurement accuracy and response. Key compatibility and usage notes Precise mode uses a mouthpiece for more accurate results; Quick check mode is mouthpiece. Designed for and smallgroup screening in various settings. Use scenarios Before driving after a social event to verify sobriety levels. At the workplace in safetyconscious roles to assess whether an individual's current alcohol level poses a risk. During gatherings or group activities to quickly screen guests and determine if a followup test is needed.