KHOI1971 4.5V 5V Wall AC Adapter Power Supply for Buddhist Prayer Music Feng Shui Buddha Pray Praying Buddhist Pray Scriptures Machine use 2-AAA or 2-AA Battery SUPER FAST SHIPPING ++ITEMS ARE 100% FULLY TEST 100% FULL MONEY BACK GUARANTEE Smart Fuse protection from sudden power surge KHOI1971 CUSTOM MADE 12 MONTHS WARRANTY EXCHANGE FOR audio machine that use 2-AA or 2-AAA battery