Material: abs Size: as shown ❥The mute and compact design make it suitable for examination, study, work and other occasions that need time ❥Green luminous, bright and not dazzling 1pc Electronic Clock There might be slightly color difference due to different light and monitor effect. There might be 2-3cm errors of dimension data due to manual measurement. ❥Two AG10 batteries supply power for the luminous and display respectively, and the normal standby time is 2 years. (include) ❥Embedded buttons ensure the feel of the buttons while misoperation. The buttons with integrated functions are easy to use and simple to set up time. ❥High-quality ABS material, especially matching the quartz of the circuit board, the error of 0-3 seconds in 24 hours under normal temperature environment, reaching the international standard Kids 2 Minute Timer Size chart: Mute and compact design suitable for examination, study, work, and other occasions that require timekeeping Green luminous display is bright yet not dazzling, ensuring visibility without strain Includes 1 electronic clock for convenient time management Embedded buttons provide a tactile feel while minimizing misoperation; integrated functions make it easy to use and set the time Dimensions may vary slightly (2-3 cm) due to manual measurement