Zach Branson wrote a review of ETON Rukus Solar Bluetooth Speaker on October 3, 2013
Familiarity: I've put it through the wringer
I especially like these because once I fully charged the device there was no reason to worry about re-charging it as long as it has direct sunlight. On my last trip to the desert I left the speakers out on a picnic table and it played the entire trip. Speakers are bluetooth and have an impressive range. I was able to easily switch devices with others on the trip so we could hear each others playlists. Highly recommended!