Wide applicability: Suitable for authorities as well as ideal for private use, family celebrations, and events. Compact, modern design with noncontact technology: Noncontact technology and a lightweight form factor. Weighs only 25 grams for easy carrying in a handbag or pocket. After 10 seconds of inactivity, the device automatically shuts down to conserve energy. Intelligent alarms and compliance: Provides a voice warning when drunkenness is detected. Supports regulatory compliance and helps prevent penalties and risks. Easy operation and fast results: Rechargeable 300 mAh battery with USB charging. After a 10second warmup, breathing into the device for 5 seconds is sufficient. The LCD display shows the result within 3 seconds. Use scenarios: At events or official venues: security staff or event organizers quickly screen attendees for sobriety during banquets, conferences, weddings, and other gatherings. Private homes and family celebrations: check sobriety of guests or family members to ensure responsible enjoyment. Workplace safety and transportation: verify sobriety before driving or operating machinery to promote safety and regulatory compliance.