Use your Japanese electronics back home without damaging them with too much power. This Step-Down adapter with an A plug turns 110~130V current to Japan-friendly 100V (up to 120W).
Specifications:
• Plug type A - standard
• Size: W52xD72xH42mm
• Weight: 250g.
• Power: 110~130V, 50/60HZ to 100V (up to 120W)
• 110V~130V Regions: America, Canada, Guam, Saipan, Hawaii, Mexico, Brazil, Columbia, Taiwan.
• More information and complete coutry list please find here on WIKIPEDIA
• Manual (Japanese)