This Casio Black & White Small Beep Alarm Clock TQ228-1D features a c harcoal color with white dial face. It also has luminous coating which provides long-term illumination in the dark even after short exposure to light. It also has an acoustic signal that goes off daily at a set time. Perfect for home use or travelling. Neobrite Daily alarm without an hourly chime Accuracy: +/-20 seconds per month Battery: 1 x AA (included) Product Dimensions: 4.2 x 3.8 x 1.7 inches; 4 ounces