This stick contains 8 Neopixels chained. Additionally, you can extend these sticks by chaining them together.
The stick has 8 NeoPixel LEDs, each sized 5 mm x 5 mm. They require 20mA of current per pixel. They are driven by a constant value of current, so even if your battery goes low, your NeoPixels' brightness level never reduces. You can drive up to 500 NeoPixels at a 30FPS rate using Arduino. Arduino's processing capability and memory sizes will not allow you to drive more than 500 NeoPixels.