<b>Welcome to Xiaoyztan Store & Please Notice Above All</b> <br>①We offer refund for product with quality issues, contact us if you meet product quality problems, we will try our best to help you. <br>②All products are delivered by Amazon, if you encounter problems like missing items or receiving empty package, we recommend that buyers firstly contact Amazon Customer Service Team for a replacement application. <br><br><b>Specifications:</b> <br>Power: 1W <br>Emitting Color: White <br>Luminance: 90-100LM <br>Color Temperature: 6500-7000K <br>Forward Voltage / Current: 3.0-3.2V | 280mA <br>Size: 8mm x 5mm / 0.31" x 0.2"(D*H) <br>Weight: approx. 1.2oz/100pcs <br><br><b>Note:</b> <br>①Work with a Constant Current LED Driver. <br>②Please refer to the positive (anode +) and negative (cathode -) sign on Leds when using. <br>③They will work more hours if the working temperature is less than 60℃. <br>④So, they need to work wih heatsinks or Thermal Silica otherwise the light will die due to too much heat.