Specification Brand : Lighthouse LEDs BulletPoint1 : 3mm Round Top Red - Extra Fast Flashing 6Hz LED - Super Bright (Ships from US) BulletPoint2 : Size: , Color: Red, Luminosity: 8,000-10,000 mcd BulletPoint3 : Forward Voltage: 1.9-2.1v, Current: 20mA, Wavelength: 620-630nm BulletPoint4 : Viewing Angle: 20-30 Degrees, MountStyle: Through Hole (DIP), Lens Color: Clear BulletPoint5 : Super bright LEDs, used for mods, RC, adruino, cars, HO Scale models, planes, trucks, adafruit projects, halloween, christmas, PC, Ultra Light, etc... ForwardCurrent : 20 milliamps ItemName : 3mm Round Top Red - Extra Fast Flashing 6Hz LED - Super Bright (Pack of 20) ItemShape : Round ItemTypeKeyword : super-luminescent-leds LightColor : Red Manufacturer : Lighthouse LEDs Material : Copper MaximumVoltage : 2.1 volts MinimumVoltage : 3 volts ModelNumber : 3MMROUNDTOPFLASHINGLEDRED6HZ NumberOfPins : 2 PartNumber : 3MMROUNDTOPFLASHINGLEDRED6HZ ProductDescription : Now in one of the most popular sizes, we have brought a flashing led. The 3mm flashing round top red led will automatically start flashing once it is appropriately hooked up to power. There is nothing extra needed when hooking this led up to power. A power source, led, and resistor is all you need. 6Hz = 6 cycles per second or about 360 times per minute. It will flash on and off 6 times each approximately per second. We consider this an "ultra fast" flashing LED. The frequency is approximate.We use and have only the highest quality leds out there. ProductSiteLaunchDate : 2015-11-10T06:59:20.663Z Size : 20 Piece UnspscCode : 32111500 WavelengthRange : 620-630nm