"This shower head is well made with rub clean jets and works fine although there are no variable settings. Unless you shower in the dark the leds are unlikely to have much affect on the ambient lighting. The leds start blue and then show a mix of blue and red when the temperature is about right for a shower. When the leds are red the water is quite hot and this warning could be a good for safety feature with young children. It will reduce the water pressure slightly due to the impeller that generates the electricty for the leds and therefore is unsuitable for low pressure systems. Difficult to measure reliability particularly in very hard water areas with moving parts."