Elevate your timekeeping with our High-Precision Referee Watch, a multifunctional digital wristwatch designed to meet the demands of sports professionals and enthusiasts. Whether you're officiating a soccer game, training for your next marathon, or simply managing your daily schedule, this watch offers the accuracy and reliability you need. Strap length: 26.8cmStrap width: 2.2cmColor: blackMaterial: PU and PCMaximum circumference: 220mmMinimum circumference: 170mmFunctions: chronograph, countdown, timer alarm, date display, week display, luminous. Button function introduction:LIGHT: backlight button.START: set time to increase the value.MOOD: switch between chronograph, timer alarm, normal time and other functions.RESET: switch between hours, minutes, week, month and day.