Features: Accurately detect fluorescent agents (0-99.99mg/L) in clothing, baby products, and cosmetics with this digital display fluorescent agent detector pen, ensuring precise measurement of whitener concentrations. Featuring a compact ABS body and rapid 1 hour charging, its 400mAh battery supports 15 day continuous use for daily testing convenience. Ideal for families, parents, and travelers seeking to guard infants and household members from harmful chemical exposure in everyday items. Effortlessly verify laundry safety at home, check baby products during travel, or screen cosmetics using the digital interfaces. The user friendly fluorescent agent tester combines lab grade accuracy with portable practicality, delivering protections through easy to read concentration analysis. Specifications: Dimensions: about. 90x22x22mm/3.54x0.87x0.87in Component: ABS Weight: 41g Voltages: 5V Power: 1W Battery capacity: 400MAH Charging time: about 1 hour Battery life: about 15 days (used 7-8 times a day) Detection ranges: 0-99.99mg/L Package Includes: 1pc Digital Display Fluorescent Agent note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.