Features: Featuring a 0.56inch four digit 7segment LED display with high brightness color option (red/blue/green/yellow/white), this TM1637 clock module delivers clear visibility and simplified SPI connectivity for compatible microcontroller projects. The display features decimals points per digit. Module connecting to digital I/O on 2pins. Ideal for enthusiasts, electronics hobbyists, and engineers seeking reliability timekeeping solution for make clocks, industrial counters, or temperature display systems requiring easy microcontroller integration. Perfect for workshop timing tools, embedded devices, educational STEM , and commercial display panels Specifications: Component: PCB Size:Approx.7x2.8cm/2.75x1.1inch 5Option Color Interfaces:SPI Chip:TM1637 Mounting Hole Diameter:2.2mm Supply voltages: 3.3V or 5V Control Interfaces: 4pins (GND, VCC, DIO, CLK) Applicable scenario:Electronic clock,Laboratory instruments; Package Includes: 1pc Digital Clock LED Display Module note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.