A speaker driver is an individual transducer that converts electrical energy to sound waves. More drivers may result in better sound quality.
2.control panel placed on a device
There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
4.is dustproof and water-resistant
The device is dustproof and water-resistant. Water-resistant devices can resist the penetration of water, such as powerful water jets, but not being submerged into water.
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.
With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.