Very happy to serve you, dear customer!1. we will DO NOT put any invoices, QR codes, promotions in the shipment, So Dont worry, Just buy it, we will do anything well for you.2.We are guarantee each device be tested rigorous before shipped out, SO all products can guarantee 100% high quality before sent out.

If you have any questions, please feel free to contact customer service, we will solve it for you, please do not give bad reviews at will, thank you in advance. 2021 New Professional Swimming headphone (Original Items)Features:1. Real bone conduction black technology.2. Hanging ear design,More comfortable.3.IPX8 waterproof level4. High-strength titanium alloy, can be bent at will.5. Longer endurance, 6-8 hours of battery life.6. With 8G memory.7. One for two intelligent connection.Package Included:Headphone * 1user guide * 1charging cable * 1earphones * 1earplugs * 1 pair

Notice:

We now have upgraded models. There will be a little difference in appearance, and performance will be better. Upgraded models and old models will be sent randomly~ Please note if you need to upgrade models.