1. The product is compact and easy to carry. 2. Easy to use and hands-on operation. 3. Long service life and reliable quality. 4. Excellent quality, exquisite workmanship, and excellent materials. 5. Widely used and can be used in multiple scenarios. This is a basic 4-bit 7-segment display module with two points at the midpoint. Each decimal point is invalid. The module is connected to the digital |/O module through a 2-pin connection. Applicable library: TM1637. h Digital tube: 0.36 inches Drive IC: TM1637 Display screen size: 30x14mm Voltage: 5V (Different batches, different words not affect the use) Colour: Blue Material: PCB Package Contents: 1 * Four digit digital tube clock 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.