Flexible WS2812B / APA102C Digital RGB LED Panel, 30x20 / 30x24 / 30x30 / 60x30 / 60x40 Available

Light Source: WS2812B built-in 5050 RGB SMD LED (Datasheet), or APA102C built-in 5050 RGB SMD LED optional
Work Voltage: DC5V
Current: maximum 5V @ 60mA draw per LED (on full brightness)
Emitting Color: RGB
Working temperature: -40 ℃ ~ 60 ℃
Pitch: 16.66mm
Finish: White, Black optional
beam angle: 120 degree
Lifespan: MTBF≥50000h

The LEDs are soldered in a zig-zag pattern. Connection wires are soldered to the PCB.

WS2812B integrated RGB LED has smart LED control circuit and light emitting circuit in one LED package. Each lighting element is a pixel and the output is driven by patented PWM technology, which  guarantees high colour consistency across all pixels. The control circuit consists of a signal shaping amplification circuit, a built-in constant current circuit, and a high precision RC oscillator.  

The APA102 chips are easier to control and offer 19 kHz fast PWM rates for flicker free performance.Each LED on the strip is 5050 size, and has an embedded microcontroller inside it which controls brightness levels, and interprets the data you send it. Each strip needs two wires to control all LEDs, one clock and one data. This arrangement makes it easier to use with slower devices like the Arduino Uno.

WS2812B APA102C Comparison:

If you're looking for a solution with high precision and ease of use, go for the APA102C. For budget or simpler projects, WS2812B works well.