R02 (QRing) Schlafdruckerkennung Schrittzähler 24-Stunden-Herzfrequenz Blutsauerstoffsättigung Smart Ring

This shop is a store, with the following special instructions: 1. All products are not guaranteed; customers are advised not to place orders. Those who do place orders without service will not receive after-sales service or returns or exchanges 2. Customers must first apply, and only after approval can they list products on our store. Customers who list products without approval and face complaints will not have their claims resolved by our store 3. Customers please strictly adhere to our factory's prescribed market guide prices for sales. Those who sell at low or irregular prices will be reported and our factory will take action through patents and image intellectual property rights to cancel their qualification. Thank you