iHome iDM9 Bluetooth
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.
Soundmatters FoxL DASH7
Meridian Explorer 2
Scosche boomBOTTLE mini
An amplifier is integrated into the device. An audio amplifier takes a small signal and makes it bigger without making any other changes in it which results in better sound, so any sound source can be connected to speakers.
More microphones result in better sound quality and enable the device to filter out background noise.
Amazon Echo Show
The battery can be recharged and used over again.
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.
The device can connect at a greater distance via Bluetooth or infrared to another device.
Sol Republic Deck
With more USB ports, you are able to connect more devices.
Wireless devices allow users more freedom of movement.