"When it comes to Value Genius has you covered, they have completely remastered their image and company to not only bring you low cost products but give you amazing quality. The SP-906BT From Genius shows this through and through, Great battery life 7+ hours in our testing before the first charge alone. Highs and bass that will blow your mind, with a price that will leave you breathless, only $24 for the SP-906BT or $29 for the SP-906BT plus. The plus gives you a 3.5mm jack which can be great if your worried about the batteries going dead on a very long trip or if your device does not have Bluetooth."

Can a under $30 BT Speaker WOW you, We think so! – 07:48
— Real Hardware Reviews