Hi ,  
We contacted before.
Realtion focus on earbuds over 8 years, has cooperated with Media markt, HAMA in EU, OFFICE DEPORT, BESTBUY, QVC in US.
has made biggest differences of TWS true wireless earphones, compared with TWS in the market:
1. RF: phone class antenna (LDS & FPC), stable connection more than 25m ( 30m indoor in non-obstacle environment)  
2. Sound: specialized graphene speaker driver, stronger bass
3. Charging: charge contacts same as Jabra & Bragi, easy and durable to charge
4. 4.5h Palying time, 500mah case box to extend 15-20
5. Comfort & Good Fit: ergonomics design, will not fall out even do some vigorous exercise, three sizes of wingtips and eartips for option    
6. BT 5.0 version with both ears for calling available if request
Samples are available for testing.

Thanks & have a great day!
Ethan Li | Sales Representative | Realton
Shenzhen Realton Technologies Co., Ltd
Cell/Whatsapp: +86 188 2653 2296