Accurate measurements: The portable alcohol tester supports a measuring range of 0-400 mg/100 mL with an accuracy of ±6 mg/100 mL, delivering reliable results each time you use it. Fast charging: Fast charging enables a full recharge in just 1 hour, allowing convenient and efficient use without long wait times. Compact and lightweight: Weighing 38 g with dimensions of 45 x 70 x 16.5 mm, this device is designed for portability and easy carry in a pocket or bag for on the go testing. One-key operation: The tester uses a single key operation, making testing quick and straightforward without complicated procedures. Use scenarios: - Personal safety checks before driving or operating machinery, giving you an immediate indication of alcohol levels. - On the go for drivers, delivery personnel, or service technicians who need quick, on site checks. - Workplace or event safety screening to monitor alcohol levels among staff or attendees in a simple, non disruptive way.