This is a low cost Red Laser Diode in Copper Casing. The Mean Wave Length is 650nm and the Power Rating is 5mW. Dimension:6.5mm (diameter) Operating Voltage: 3V Operating Current: < 45 mA Continuous Power: < 5mW Working methods: Can Work Continuously Angle: 0.1 – 1 mrad Working medium: semi-conductor laser pointer Light pattern: Point Light pattern color: red (high light) Working temperature: -10 ~ +40C