I feel like this could become the next Swiss watch. Bring joy back to showering. Meticulously hand crafted by artisans in the Swiss Alps. Features include:

- Polished stainless steel case

- Intricately geared shower control valve with see through cover

- High precision temperature set point control

- Compensates for input water pressure / flow to maintain temperature

- Comes with unique ID and certificate of authenticity

Obviously it will require annual servicing to make sure ensure continued operation. Your smugness will keep you warm long after your hot water runs out.