Vanssa specialized on smart watch R&D,producing and marketing,we have over 10 years experience on wearable devices,focusing on smart watch TWS earphone solution and OEM service.Cooperating with Realtek,Dialog,Nordic etc.We have over 10 engineers for hardware and software,over 3000 square meters production shop,6 production lines and 100+ workers .Our customer type:Nutrition supplements,retailer online or offline,project holder.We can provide best solution for our different customer.