Great product quality， that's solidly built. Best of all， its very affordable price. <br />Operating voltage: 5V<br />Specifications: 15 x 24 mm<br />Source wavelength: 650 nm <br /><br />1 x Laser Diode Module<br /><img src="http://img6.eachbuyer.com/x9/p100/eb3766_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb3766_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb3766_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb3766_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb3766_5.jpg" />