It's time to get creative with LEDs thanks to the Brightdot Wearable Collection The entire collection includes a series of different computers with addressable Rgb LEDs and a unique Arduino that is compatible to create something bright and portable that is also smart. This set includes a large Brightdot circle. Each PCB is super thin and includes gold-plated connectors with 6 1.22 mm (0.04 in) sewing holes. All models also have backup lines to ensure that one faulty LED doesn't affect the others. Each LED is controlled by 3 wires (power, ground, and data) and can be connected via these wires to the next LED, creating a large string of LEDs. You can solder these LEDs into electrical circuits, or sew them into clothes, on backpacks, on shoes, ... Check out the following tutorials: Make a Brightdot tie Make a Brightdot Twinkle Beanie. 1 X Large Brightdot Circle • Integrated backup line (This ensures that a broken LED does not affect the next LED) • Each PC has gold-plated connectors with 6 sewing holes of 1.22mm • Solder or sew them . Basic Product Information: •• Instruction manual Language: English •• Primary colors: Black •• Additional colors: White •• Diameter: 69 mm •• Depth Unit: 3.5 cm •• Height Unit: 12 cm •• Width Unit: 7.5 cm •• Weight Unit: 29 g • Technical data: •• Specifications Kit & Modules: 1 x Large Brightdot Circle Integrated backup line (this ensures that a broken LED does not affect the next LED) Each PCB has gold-plated connectors with 6 sewing holes of 1.22 mm Solder or sew them Specifications Max. Power consumption: 60 Ma / Led at full brightness Power supply: 3.3 V - 5 V Diameter: 69 mm (2.7 in) PCB thickness: 2.1 mm (0.082 in) Required: Or other Arduino-compatible development board • Operational characteristics: •• Coding level: 2 •• Electronics skill level: 1 •• Mechanics skill level: None •• Soldering skill level: None