Sturdy! They feel stronger then aeropex which I had various durability issues in the past, they have much better noise cancellation as phone/computer headset then aeropex, comparable with openrun pro, I like the multifunction button better it is more sturdy giving better control with rewind/forward function. Last but not least USB-C charging this is main selling point for me with this model – I no longer have to carry separate cable for them.

I am quite pleased with them for daily use in office and home, they work unreal with LG OLED tv for surround affect (like any open ear). For sports I would still choose openrun or openrun pro, Pro have best sound quality alas with some leakage – they combine bone conduction with open speakers for high frequency.