Useful alarm function. Temperature display function. 4-digit LED display, can show you time and temperature. The surrounding LED can display many types of modes. Great digital clock DIY kit for electronics enthusiasts, easy to install. Key Function: PLUS key, for years, months, days, hours, minutes, seconds add operation. According to the numerical sum 1 at a time MODE key, can be in display clock, switch to the year, month, day, hours, minutes, alarm clock, the adjustment of outer ring LED display state. To use add key to the year, month, day, hours, minutes, seconds, and display mode to adjust RST key, press the reset button, then the MCU reset Spesifikasi Display: 4-digit LED Color: Blue Material: ABS + Electronic components Size: 80 x 80mm Good quality. Display time, temperature, date. Very convenient. 4-digit LED display. Useful alarm function. Battery: CR2032 Panduan perakitan: dropbox_dot_com/s/ikfuvn7suis1ggw/SKU176893EC1204B%20User%20Guide%?dl=0 Isi Paket: 1 x Rotating Digital Clock Kit Catatan: Kondisi dalam bentuk komponen (DIY), belum dirakit / disolder.