Square 15*15mm LED, the color is green. 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.