wattage       
noun [ U ] uk/ˈwɒt.ɪdʒ/ us/ˈwɑː.t̬ɪdʒ/
 (电子设备)瓦特数,功率
the amount of electrical power that a piece of equipment produces, expressed in watts
  For lower wattage ovens, heating time must be increased. 对于低瓦特数的烤箱,必须增加加热时间。 
 Lightbulbs should never exceed the wattage marked on the lamp. 灯泡的功率不应超过灯上标明的功率。 
 See: watt
 - More examples
- The solar panel produces enough wattage to charge a laptop from a day of direct sunlight.
- You cannot use a normal light bulb that is a high wattage.
- The cooking time could vary slightly, depending on the wattage of your microwave.