This is a 12V fixed-voltage MyVolts-branded power supply adaptor designed to meet exactly the power specification of your Sennheiser Freeport EM1 Receiver.
The "myVolts 12V power supply for Sennheiser Freeport EM1 Receiver" would be an ideal fit for audio enthusiasts looking for a reliable and efficient power solution for their Sennheiser Freeport EM1 Receiver.