NEC Liquid Fuel Cell Phone - X2 Concept @ Space

This is not a bottle for water, but a mobile phone. This NEC phone is entirely transparent and uses liquid fuel cells, and those who don't know would probably think it's a bottle. To check the remaining battery life of the phone, just look at the liquid fuel inside, there’s nothing more illustrative than that. When the fuel runs out, I wonder if you can refill it through the metal buckle on top. Additionally, the phone operates via a touchscreen, but other specific details are currently unknown and we will have to wait until its launch. However, it seems like Japanese phones have completely disappeared from China, so it remains to be seen whether this model will have the chance to make an appearance in China again.