We deserve quality music even while doing sports and other outdoor activities. The Awei X660BL earbuds feature dual dynamic drivers for powerful bass sounds. The designers hid the battery behind the speakers to make the cable lighter. The water resistance has been increased to IPX4, so the device is completely protected against splashing water from all directions. It can connect to two devices at the same time, so you can pick up your phone at any time in addition to listening to music from your smart device.