A serious hardware. Too bad it does not exist in lower power and therefore less heavy

Most electronic devices today are powered or recharged so as to support a range of voltages from 100V to 240V of. Among these devices useful for me the only exception for the trip is my electric toothbrush Oral B I can not do without. During of a previous trip to Japan, having found that I could not recharge this brush javais bought a completely ineffective battery brush. Jaurais certainly could buy a transformer on site but the price mavait seemed prohibitive.

So I purchased this transformer for a trip to Japan made in March / April. My choice was dictated by the minimization of the price and weight and therefore the power, the affected brush nayant quune the order of 10W power. This transformer is oversized (and thus too heavy) for my needs, but I have not found nen that is better suited. Fortunately casters facilitate transport suitcases!
Quoiquil in this transformer is perfectly equipped with connection sockets, allowed me to get my brush Oral B in Japan. It can be used for an upcoming trip to Japan or the United States, unless by then Oral B has released a 100-240V charger (There is one for Philips toothbrushes) or that is offered for sale for a transformer less power.