The time is divided into hours, minutes, and seconds. the K1 key to switch in order. K2 and K3 are the addition and subtraction of time, and K4 is the direct exit to the standby interface. After setting all three times, K1 again to update the real-time time according to the settings Material: ABS colour: As shown Package Contents: 1 x Real Time Clock Relay Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.