The Laisimo Y1 is the kind of rare delicate balance you find once in a blue moon. With low power ultra-portables, it is hard to have everything. Because of size, charge capacity is always an issue. However, in the Nano Y1, an internal 950mAh cell delivers up to 20 watts to 0.8 ohm resistance heads. The reservoir holds 1.6ml of juice. Is it the perfect ultra-portable?