Please Pay Attention: 1. The Price is Only LED Strip, Not Included Power Supply and Pixels Controller. 2. SK6812 RGBW Must Use DC5V Power Supply and Pixels Controller to Control. 3. Every 0.5 Meter with Solder Joints, It Is Very Normal In an Electronic Product, It's Not a Quality Problem. 4. SK6812 RGBW LED Strip Can Be Cut Between Each LED To Create Custom Lengths, Do Not Bend LED Strip Sharply. 5. The 3 Pin SM Connectors of LED Strip Included: Red: VCC, White: GND, Green: DATA. 6. The LED Strip Has Adhesive Tape On The Back of PCB ( Except IP67 ). Please Make Sure Installation Surface Must Be Smooth, Clean And Dry. 7. Longer LED Strip Runs, Please Add More Power to 2 Pin Power Wire of Both Ends To Reduce Voltage Drop. How to Choose LED Power Supply and Pixels Controller? First, Calculated The Whole LED Strip Lights Watts. One LED Chip is About 0.3W, If You Buy 5m 60LEDs/m ( Total LED Strip is 300 LEDs ), So 0.3W*300=90W. Then, Choose the Right LED Power Supply. This LED Strip is Work with DC5V Power, So 90W / 5V=18A ( At Least 18A or more ). Finally, Choose the Right Pixels Controller You Like. SK6812 RGBW LED Strip is Controlled By Double Data Line Pixels Controller. So you could choose them from our store, we have IR Remote+Bluetooth APP SP617E, Bluetooth APP SP630E, Wifi APP SP530E, and Computer controller etc. 30, 60, 144: 30leds/m, 60leds/m, 144leds/m. IP30: Non- waterproof. IP65: Waterproof in Silicon Coating. IP67: Waterproof in SiliconTube. IP30,IP65, There is a self-adhesive tape at the back side. You can install easily. LED Source : 5050SMD RGBW built-in SK6812 chipset. Voltage: DC5V. Power: 144LEDs/meter-43.2W / Meter. 60LEDs/meter-18W / Meter. 30LEDs/meter-9W / Meter. IC type : SK6812 RGBW IC. LED/per meter: 30, 60,144leds/Meter (each LED is separately controlled). IC/per meter: 30, 60,144IC/Meter (1 IC drives 1 led chip). Pixel /per meter: 30, 60, 144Pixels/Meter. Color: RGBW (WW 2700-3000K ; CW 6000-6500K; NW 4000-4500K). PCB color: White / Black available. Package Including: Only SK6812 RGBW LED Strip Lights ( No power and spi pixels controller ).