Features (Made in Japan)

• The Yamaha EF1000iS meets the strong demand from the market for a light,
  portable generator, which offers long continuous running capability
  and supplies high quality energy required nowadays to power electronic
  products with built-in micro-computers, such as laptops.
• The EF1000iS weighs only 12.7kg and is equipped with a
  new 4-stroke OHV 50cc engine.
  
• The Yamaha exclusive double coil system gives better fuel economy,
  a continuous running time of 12 hours and less noise.
  Designed to supply commercial-equivalent power, the EF1000iS is compact
  and combines a convenient carry handle making it extremely portable.
  
• Noise Block, acoustically designed sound reduction system helps to make
  the EF1000iS the quietest portable generator in its class.
• Clean Output The EF1000iS - with its inverter system - features
  Pulse Width Modulation (PWM) so Voltage stability is within ± 1%,
  and Frequency stability is ± 0.1 HZ. Its pure sine wave is as clean or cleaner
  than commercial power, improving the efficiency and versatility of your
  electronic equipment and accessories compared to other portable power.

Specifications