NeoPixel Ring - 16 x 5050 RGBW LEDs w/ Integrated Drivers [Natural White - ~4500K] : ID 2855 : $11.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Basic Connections | Adafruit NeoPixel Überguide | Adafruit Learning System
Adafruit NeoPixel Digital RGBW LED Strip - White PCB 144 LED/m [1m] : ID 2847 : $69.95 : Adafruit Industries, Unique & fun DIY electronics and kits
NeoPixel Stick - LED strip 8 x RGBW 5050 - WS2812B / SK6812 - cold white - Adafruit 2869 Botland - Robotic Shop
Adafruit NeoPixel Digital RGBW LED Strip - White PCB 60 LED/m : ID 2842 : $107.80 : Adafruit Industries, Unique & fun DIY electronics and kits