yezhou women ultra i smart watch waterproof wearable technology fitness with heart rate sleep tracker blood oxygen monitor

for customers who purchase in large quantities, we can negotiate logistics and transportation methods. strive to be delivered in the safest and fastest way.if there is an emergency, it may be extended we are a professional manufacturer, good service and fast delivery.welcome to retail and wholesale heart rate monitoring, blood pressure monitoring, goal-based exercises, sleep quality watch language: chinese, english, french, spanish, russian, portuguee, thai, arabic,poland, turkey, italy. german, korean, japanese, hebrew, dutch.syi