Specifications: Color: Black Material: Plastic + Electronic Components Model: DC Generator Model Connection Type: Shaft Connection Power Generation Voltage: 5-12V Speed Range: 1000-3000rpm Product Weight: 275g Package Weight: 350g Product Dimensions: 7., 9 x 4., 3 x 5., 5cm Package Dimensions: 12 x 8 x 6cm Packing: Box Recommended Age: 15+ Package Includes: 1 x Generator Model This mini generator features a realistic retro design with electrophoretic painted surface and digital voltage display, creating a stunning visual centerpiece for your model DC 12V 24V 4-20mA Digital Signal Generator Module Board With 3 Digits Led Display 🔧 Dual-Function Performance: Experience real power generation! ✨ Real-Time Voltage Monitoring: Watch power generation in action! This functional generator helps demonstrate energy conversion principles while serving as an beautiful display piece for hobbyists and educators aged 15+ Nitro Rc Engine Mini Retro 12V DC Generator With Digital Voltage Display For Twin-Cylinder SEMTO ST-NF2 Nitro Engines - Belt Connection Version Model Engine Kits That Run On Gas Real-Time Voltage Monitoring - Integrated digital display tracks 5-12V output. Plastic housing ensures lightweight (275g) yet durable performance 🔧 Universal Belt Compatibility - Belt-connection design fits ST-NF2 methanol/petrol engines & most twin-cylinder models (1000-3000rpm range 📚 STEM Education Tool: Perfect for aspiring engineers! LynxPro Mini Retro 12V DC Generator with Digital Voltage Display for Twin-Cylinder SEMTO ST-NF2 Nitro Engines - Belt Connection Version ⚙️ Direct Shaft Connection: Enjoy seamless integration!