Many a Sony speaker offers truly portable operation via their lithium ion batteries inside. And when said battery dies, you…
Many Sony speakers, including the SRS XB21, feature a charging status light that lights up orange while they're charging. But…
Most JBL Bluetooth speakers, including the XB21, offer truly portable operation via their lithium ion batteries inside. And when said…
Many Sony speakers, including the Sony SRS XB21 Bluetooth party speaker, feature a blinking orange light that tells you that…