Are you looking for reliable and inexpensive 650nm Laser Diodes For DIY Projects? Look no further, as you've come to the right place! These high-quality laser diodes for DIY projects will certainly fit the bill! Details Material: brass, plastic Laser shape: Dot Head diameter: 1/4 inch (6mm) Wire length: 3 inch (75mm) Wavelength: 650nm (Red) Working voltage: 3V, 5V Power < 5mW Operating temperature: 96.8~149 °F (36~65 °C) Operating current: must be less than 20 mA Service life: over 2,000h Package includes: 1pc, 5pcs, 10pcs