First of all, the speed of logistics, I am in the United States, the speed is very fast, the next day I received the goods. Secondly, the packaging is complete and very firm. Again, the details are as follows: 1. The manual is very careful, and there are six languages, this is super sweet! 2. A protective film is placed between the two earphones, which may be effective in preventing friction in the middle of transportation. Hi guys! If the seller has the details, do you still doubt his quality? Don't doubt that you deserve to having it!