About this item This fits your . Make sure this fits by entering your model number. This mini alarm clock uses button electronics, each alarm clock will be assembled one, the plastic spacers will be removed when using, the alarm clock can be used normally. Set the alarm or time, please follow the direction indicated by the arrow next to the knob, otherwise it may cause the alarm to be inaccurate. This model is a mini metal small alarm clock with a diameter of 40cm. Please check the size before purchasing. Small and light weight for travel The best choice for office workers , student ,family and so on The main body is metal and the back cover is ABS plastic.