the new sky-3 series 5.3 tws bluetooth earphones wireless noise reduction earphones have an extended battery life suitable for android iphon

scompatibility: suitable for apple, iphone, htc, sony ericsson, universal, sharp, nokia, motorola, palm, samsung, chinese brand, lg communication: wireless style: in ear type: bluetooth headphones and accessories>smart watch, smart bracelet, android tv box 3. how do we ensure quality? always pre produce samples before mass production; always conduct a final inspection before shipment;each product undergoes rigorous testing to ensure that there are no issues when sending the goods..syi