Infrared Bulb or Thermal Pad?

I’m looking to invest in better warm up since hot shower isn’t being very practical for me.

I browsed forum and seems most veterans use infrared bulb or thermal pad

Both cost the same for me here. I’m mainly worried about SAFETY and USEFULNESS

I got 3 questions:

1) Are infrared bulbs safe? Is there a maximum voltage or wattage for infrared bulbs to be used on the penis? For example, is a 110V 150w infrared bulb SAFE to use?

2) A thermal pad that reaches 60°C is SAFE to use?

3) Which of them would you recommend? A pad or a infrared bulb?