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.
A speaker driver is an individual transducer that converts electrical energy to sound waves. More drivers may result in better sound quality.
Vifa Stockholm 2.0
The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.
Meridian Explorer 2
Device is protected with extra seals to prevent failures due to any kind of weather.
Soundmatters FoxL DASH7
A passive radiator looks like a normal driver (speaker) from the front, but on the backside all of its 'guts' are removed. Passive radiators allow woofers to produce deep tones that otherwise may not have been possible. They can have the same sonic output as larger speaker cabinets, but in a much smaller size.
The battery can be recharged and used over again.
The device can connect to WiFi.
Amazon Echo Plus 2
An auxiliary input allows you to play other audio sources by connecting them through a simple audio connection like a 3.5mm jack, i.e for MP3 or portable DVD/CD player.
With a standard mini jack socket, you can use the device with most headphones.
With more USB ports, you are able to connect more devices.
AirPlay allows wireless connection of Apple devices with external screens or speakers. You may stream computer screen, video and music from iOS devices, play games like on consoles or present your slideshows easily on your TV.
Wireless devices allow users more freedom of movement.