uxcell Single-Sided Copper Clad Laminate PCB Circuit Board, FR4 100x70mm 3.94x2.76 inch, 1.5mm Thickness DIY Prototyping PCB Board, Name Board, 20pcs 20 audio An easy-to-read needle shows GRAY

An easy-to-read needle shows GRAY when out of tune and bright GREEN when in tune

Great for adding percussive colors: shakers are a quintessential instrument for time keeping and adding rhythmic color

WIDE APPLICATION - These LEDs can be widely used in variety of applications

(Note:Travel Charger Adapter and Li-ion battery are not included

uxcell Single-Sided Copper Clad Laminate PCB Circuit Board, FR4 100x70mm 3.94x2.76 inch, 1.5mm Thickness DIY Prototyping PCB Board, Name Board, 20pcs 20 audio An easy-to-read needle shows GRAYuxcell Single Sided Copper Clad Laminate PCB Circuit Board, FR4 100x70mm 3. 94x2. 76 inch, 1. 5mm Thickness DIY Prototyping PCB Board, Name Board, 20pcs Read more Copper Clad Board Specifications Material: FR 4 Glass Fiber, Copper Layers: Single Sided Applications Widely used in television, radio, computer, mobile communications, and other electronic products. Features High mechanical and dielectric propertiesHigh flatness, excellent bending strength