Pre-wired 3mm LED Kit — 6 Colors, 12 Pieces, Built-in Resistors, 3–5V DC Key benefits Plug-and-play lighting: Each LED is pre-wired with a built-in resistor so you can connect directly to a 3–5V DC battery or power supply without adding extra components. Saves time and reduces errors: Pre-wired leads and resistors eliminate repetitive soldering and resistor selection, making installation faster and simpler. Compact and flexible: 3mm round-top LEDs and 7.9 inch (200 mm) leads give low-profile illumination with enough wire length for tidy routing and mounting in tight spaces. Versatile color options: Six distinct colors let you code signals, create multi-color accents, or match the tone you need for hobby or decorative projects. What’s included 12 pre-wired LEDs total: 2 pieces each of Orange, White, Yellow, Pink, Warm White, and Emerald Green. Specifications LED type: 3mm round-top Wiring: Pre-wired with built-in resistor Operating voltage: 3–5V DC Wire length: 7.9 inches per LED Quantity: 12 LEDs (2 per color) Colors: Orange, White, Yellow, Pink, Warm White, Emerald Green How it solves common problems No resistor selection required: Avoid mismatched resistors that can burn out LEDs or reduce brightness. Easy polarity connection: Simple two-wire hookup (positive and negative) to standard 3–5V supplies reduces installation mistakes. Small footprint: Ideal for applications where space is limited and a low-profile light source is required. Easy to use Connect the positive and negative wires to your 3–5V DC battery or power supply. Ensure correct polarity. No additional resistors or drivers needed for the specified voltage range. Practical use scenarios RC models and drones: Use the compact, bright LEDs for navigation lights or indicator lights on RC helicopters, quadcopters, cars, and boats where space and weight matter. Hobby electronics and scale models: Add realistic lighting to scale buildings, robot projects, or model vehicles without complex wiring or resistor calculations. Musical instruments and event decoration: Retrofit guitars, stage props, or small wedding and party decorations with subtle colored accents for visual effect. Notes and compatibility Designed for 3–5V DC operation; do not exceed the specified voltage range. Confirm correct polarity before powering to avoid damage. Each LED includes a resistor appropriate for 3–5V drive; if used with other circuitry, verify compatibility. This kit provides a straightforward, reliable way to add multi-color illumination to hobby, decorative, and small electronic projects while minimizing setup time and wiring errors.