Check the listing for details. 532nm Green Diode Lasers 10mw Brass Laser Dot Module 3V with Driver Switch. Condition: New. Listed at 6.10 USD. 532nm Green Diode Lasers 10mw Brass Laser Dot Module 3V with Driver Switch ParametersWavelength:532nmOutput Power:10mwWorking Voltage:DC3vWorking Temperature:＋15 ℃~＋35 ℃Laser Shape:DotFocusable:N/AMaterial:BrassDuty Cycle:45 seconds on,15 seconds offDimensions:￠12 mm X 50mm(including PCB) FeaturesSpring is Negative -, bronze casing is postive +.Or you can power it directly to connect balck and red wires,then press the switch.with switch and spring on the PCB.The laser module is precise instrument. Before carrying on some laser DIY activities, please read about the technical information first and protect your eyes before 30mW laser ray. You must know the possible hazard when doing laser DIY.Please avoid direct eye contact to the laser. Package1pc 532nm Green Diode Lasers 10mw Brass Laser Dot Module 3V with Driver Switch Payment DetailsWe only accept Paypal Payment.We will send the item to you as soon as you won and paid. Delivery DetailsWe provide standard shipping to international via China Post airmail or Hongkong Post airmail with tracking number.Contact us if not receive items.We only ship to the approved address given in Paypal Payment.Please make sure payment address in Paypal is correct.Any non-received items caused by invalid address registered on Paypal are not in our full refund or replacement policy. Returns and ReplacementsWe accept returns and replacements within 30 days from the day the cutomer receive the products.Please make first contact within 30 days from receiving the order.Products should be returned in original condition. About FeedbackWe will try our best to solve any dispute and satisfy our customers.Please contact us firstly if you have any problems.As you know,a negative feedback can deal nothing and the positive feedback is very important for us.So we hope to your understanding.And we will appreciate if you would like to contact us for solving your problems well.Thanks!