OK product but awful customer service
I bought the Runner Diver2 directly from naenka.com thinking I was was doing a good thing.
Unfortunately, the headset wasn't right for me. I couldn't find a comfy fit and I found the Bluetooth too sensitive to environmental disruption, so chose to take advantage of their returns policy; a big reason I ordered in the first place.
Customer support pushed back for me to try different things rather than return, which was fine at first, but when I demanded the return I found out why: they don't have a local distribution, so the cost of doing the return is a significant cost (to the consumer).
I took a 30% refund to keep the headset, which I'll give away, but it's very disappointing to find out that the policy they tout is a technical truth but actually undesirable.
Personally, I will not use them again.