... first quality 3. Compatible with iphone,ipad, N3DS, ebook,speaker... Products Characteristics: 1. with fixed frequency control circuit, ... it provides with over voltage, over current, overheat ... 855. Burn-in test: 80%---100%6. Safety Approval Standard: UL,1310,1950,69507. EMC Standard: EN550022, EN55024/A1Electronical ...