Bestday 7 Change Color Triangle Pyramid Alarm Clock Boy Girl Creative Clocks Display time, date, week, temperature, support 12-hour and 24-hour time format, conversion of Celsius and Fahrenheit temperature Alarm and sleeping fuction:8 alarm songs, at the same time activate the function of sleeping Auto search environment temperature. Norma l testing temperature range :-10C~50C (32F ~ 122F) ,accuracy: 0.5C The clock changes LED color that resembles a beautiful light show at night. Power supply: 3x AAA batteries (not included) Dimension: 10cm (H) x 9cm (base) x 9cm (base) / 3.94" x 3.54" x 3.54"