Feature Highlights: 1. Two Premium Sets Included – Each set features a compact yet practical design, perfect for portable power needs, emergency backups, testing, education, and small-scale hydropower simulations. 2. Simple & User-Friendly Build – Designed with straightforward construction for easy operation—no complicated setup required. 3. High-Efficiency Power Generation – Equipped with an efficient power generation engine and planetary gear transmission system, delivering reliable output with minimal effort. 4. Wide Voltage Compatibility – Adjustable output from 5V to 24V DC, making it versatile for charging devices, powering small electronics, or educational demonstrations. 5. Durable & Portable Design – Made from sturdy metal and plastic in a sleek black and silver finish. Compact size (approx. 130 x 35 mm / 5.1 x 1.4 inches) makes it easy to carry and store. Product Details: This handheld generator delivers efficient, manual power generation for a variety of uses—whether as a backup power source, a rechargeable supply, or a hands-on teaching tool. Its robust planetary gear system ensures smooth operation and higher energy conversion. The unit is lightweight, requires no tools to operate, and is ideal for outdoor activities, emergency kits, STEM education, and small renewable energy projects. Specifications: - Output Voltage: 5V–24V DC - Type: Micro Wind/Hand-Crank Generator - Max Output Current: 1500mA - Max Load Power: 20W - Color: Black & Silver - Dimensions: Approx. 130 x 35 mm / 5.1 x 1.4 inches - Material: Metal + Plastic - Package Includes: 1 x Hand Generator, 1 x Bubble Bag Note: Slight color variations may occur due to lighting and screen differences. Measurements allow a tolerance of +/- 1–3 cm. Other accessories shown in images are not included unless stated above.