This is a 15V fixed-voltage MyVolts-branded power supply designed to meet exactly the power specification of your Theragun Mini G4, MINI-PKG-US, MINI-PKG-AU, 4th Generation Massager.<br> Specifications:<br> - Output voltage is 15V<br> - Max. output amperage is correct for your device<br> - Output tip is the right size and specification - we've tested it thoroughly<br> - 2 pin plug for use with US (Type A) wall sockets<br> - Input voltage is 100-120V AC, 50/60Hz<br> In addition, this -branded replacement power supply for Theragun Mini G4, MINI-PKG-US, MINI-PKG-AU, 4th Generation Massager is:<br> - Compliant with all safety standards, and features overvoltage, overcurrent and short-circuit protection to protect your device from damage<br> - Energy Star level 6 approved, guaranteeing more efficient delivery of power to your devices, at less cost to you<br> - RoHS and CE-certified<br> - Covered by a 2 years' warranty: if the power adaptor fails within 2 years from purchase, we'll replace it, no worries.