Easy to Install: The pin header can connect to digital I O, so the the installation is very easy with small size. Good Material: Processed with premium PCB with accurate wiring and TM1637 drive chip, works with good stability. Driver IC: TM1637. Feature: 1. Clear Display: Equipped with LED for 4 digit display, the 0.36in display module ensures a clear viewing on data Specification:Item Type: Digital Tube Display ModuleMaterial: PCB BoardApplication: LED Digital DisplayNumber of Digits: 4 digits and 7 segments. Wall Clock, Wall Timer, 4 Sets LED Segment Digital Display Digital Display Module 4 Sets Digital Tube Display, Digital LED Display Module Tube Module 5V LED Electrical Displays 4 Digit 7 Segment 0.36in TM1637 Drive Chip DIY Electronics Display Practical Use: Allows for wide application on a variety of machine and equipment for smart control and operation. PREMIUM MATERIAL]: Crafted with premium PCB, accurate wiring, and TM1637 drive chip for stable performance. [EASY INSTALLATION Digital Tubes: 7 segment enables a wide numeric range, and each bit has a radix point for convenient calculating. Driver IC: TM1637Voltage: 5VPackage List:4 x Digital Tube Display Module4 x Pin HeaderNote:Match the appropriate model and size before use.