Features: 1. This Is A Breadboard Development Kit That Provides An Experimental Platform For / W. 2. It Is Equipped With Led Lights, Buttons, Buzzers And Breadboards, Making 's Experimental Circuits More Convenient. 3. Among The for / W Kits, This Is A Very Cost-Effective Product. 4. Easy To Use; Plug And Play; Built-In Led Light; Built-In Button And Built-In Buzzer; 5. Built-In Half-Size Breadboard; Suitable For Beginner Users To Build Their Own Circuits; Description: 1. Size: About 80mm x 145mm 2. Type: W Gpio Expansion Board 3. Material: PCB Color: as shown Package Contents: 1 x Breadboard Expansion Board 1 x Female-To-Female Cable 1 x 65Pin Jumper 1 x W 1 Set Of Screw Mounting Accessories Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use 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.