The Jade Audio EW1 TWS is a budget-priced true wireless system featuring Bluetooth 5.0 and aptX decoding. Jade Audio is also a sub-brand of FiiO.
The smaller rounded jellybean styling combined with the lightweight plastic design makes the EW1 a comfortable experience in your ear. The only unknown is the tip size and how it works best for you which is where the level of isolation is going to be controlled.
There is no custom universal shaping on the EW1 but the angle of the nozzle and size of the tips do a decent job of ensuring it does not crash down on your outer ear. In summary, a comfortable fit with little movement using the stock tips.
The ERW1 uses touch instead of physical push buttons.