Fineblue F2 Pro Bluetooth 5.1 Earphone Easy to Pair aluminum alloy Stereo Handsfree retractable headset noise canceling packing: For samples below 10PSC, we will use boxes to package the products and send them to you. For large orders, after the products are packed, we will use thin films to seal them properly, so that the products will not be affected by moisture during transportation.