Features: Small power Micro-three-phase alternator Wind-powered hand-operated friction generator and high quality Made of high-quality materials, durable This product is a three-phase alternator, which can be connected arbitrarily. Two lines can light up LED beads. This product is suitable for microwind micro-hydraulic hand friction and three-phase AC power in the school teaching mode. Specifications: material: metal Color as shown Output voltage: 3V-24V Output current: 0.1A-1A Rated power: 0.5-12W Rated speed: 300-6000 rpm Motor size: Bottom motor rotor: Φ28.5mmX10mm Fixed plate: 30mmX30mm Total size: 30mmX30mmX13.2mm (height) Shaft size: diameter 3mmX length 31.5mm Cable length: about 70mm (exposed part) Package Contents: 1 x Hand Cranked Generator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.