Check the listing for details. Copper Permanent Magnet Synchronous Generator Low Rpm Magnet Alternator. Color: Silver, Condition: New. Listed at 63.02 USD. Shell Material: Aluminum Internal Winding Material: Copper Voltage: 12v Power: 1200w Inner Size of Machine Foot: 7.1cm Outer Size of Machine Legs: 10.8cm Packing Size: 26*18*15cm Gross Weight: 2.5kg Net Weight: 2.5kg The Package Includes: 1x Permanent Magnet Silicon Rectifier Generator Note: Rated Voltage 12v, Peak Voltage 14v Product Description: ★ Permanent Magnet Silicon Rectifier Generator Is a Combination of Excitation Silicon Rectifier Generator and Permanent Magnet Constant Voltage Alternator. ★Adopting Magnetic Strip Rotor, Generator's Own Rectifier and Full-wave Voltage Stabilizer, Which Not Only Reduces the Cost, but Also Improves the Generator Power, It Is a New Generation Product. ★Pure Copper Material, Built-in Voltage Stabilizer, Dual-purpose Charging and Lighting.