Square 15*15mm LED, the color is Blue.It's compatible with breadboard, and you can easy to make your protype with the square led. Feature Uniform light emitting area. Easily mounted on P.C. boards or industry standard sockets. Flush mountable. Excellent on/off contrast. Can be used with panels and legend mounts. Specification Power dissipation: 62.5mW DC Forward Current: 25mA Peak Forward Current: 140mA Reverse Voltage: 5V Operating / Storage Temperature: -40°C To +85°C Lead Solder Temperature: 260°C For 3-5 Seconds For any technical support or suggestion, please kindly go to our forum.