UNDER ARMOUR UA SPORT WIRELESS FLASH Completely wireless even during sports. Wireless design engineered to help athletes perform at their best in every workout. Also, with IPX7 sweat and waterproof function, the earphone part is designed to withstand intense exercise and all kinds of weather. Furthermore, it has TalkThru and Ambient Aware functions. The battery lasts for 25 hours. It lasts for 5 hours on a single full charge. Those who travel frequently can rest assured. The water-resistant aluminum charging case allows you to recharge the earphones for an additional 20 hours. This is a limited one-of-a-kind item! We recommend purchasing it early before it sells out. [Packaging] We will pack it with bubble wrap, recycled cardboard, wrapping cardboard, and plastic wrap, etc., according to the situation. * Please note that we will disassemble it as much as possible when shipping. * Please check the item carefully in the photos before considering purchasing. * Some items will be shipped in simple packaging. * Regarding shipping, we try to ship within the stated period, but if there is a delay, we will contact you and ship as soon as possible. * If you wish to negotiate a price reduction, please indicate your desired price. * We will give priority to those who purchase, even if there are questions or negotiations in progress. Thank you for your understanding.