Review on 🔊 KNZ Retro Portable Bluetooth Speaker: Vintage Design, True Wireless, Built-in Subwoofer with Superior Bass, 10W, FM Radio, microSD Card & USB Support, Remote Control (Brown) by William Kava

For $17 I bought two. They connect to each other and then to your iPhone or PC, giving you true 2 channel right/left stereo (I tested this with an audio file with 100% right/bottom separation). In addition, the two controls for the front speakers are also linked. If you adjust the volume on one speaker or the other, both will sync. The same goes for the pause, forward, back, and mode buttons. These functions can be controlled from each speaker. And with the IR remote control on one of the speakers, you can also control these functions on both speakers at the same time. The same applies to the audio equalizer function (which can "only” be accessed with the remote control). The FM radio scans stations and loads presets. This process is a bit iffy as it skips some strong stations and saves some with only static data. However, you can use the remote control to simply enter the station you want (e.g. 102.9). Please note that in radio mode, the Bluetooth connection between the speakers will be lost and they will work individually. The included instructions are microscopic and omit much of the information given above. Oh yeah, the sound is great too with lots of volume.