1.Japan Eiko Series: Please use No. 3 Carbon-Zinc battery.
 

   
  2.Korean Star Series (for IT2000, IT4000, IT6000S, and IT7000): please use Alkaline battery.
 

   
  3.Korean Star Series (for IT6000): please use square 9-volt battery.
 

   
  4.Korean Dia Series (for DS35EK, DST45EK, DS36EK, DST50EK): please use No. 3 Carbon-Zinc battery.
 
   
  5.Korean Dia Series (for EDS105): please use No. 3 Carbon-Zinc battery.
 
   
  6.Korean Dia Series (for DS90E, DS100E, and DS133E) please use No. 3 Carbon-Zinc battery.