Main functions:Fluorescent pen message boardYou can switch date¡¢ time¡¢ temperatureDegrees Celsius or Fahrenheit is optionalALarm clock and the countdownFrom 2000 to 2099 calendar queriesProduct size: 21*6.5*18cmPower supply:3pcs No.7 dry cell¡¢DC5V(Not with the shipment)Color available:Pink¡¢Blue¡¢GreenNet weight: 165g