Multiple Connection Way: the Wireless Bluetooth Speaker support Wireless Bluetooth(up to 32 feet), SD/TF card insert and USB/AUX input for non-Bluetooth devices. Hands Free Function:with built-in Mic, the Wireless bluetooth speaker allows you to answer, reject and end calls without holding your smartphone. Superior Sound Quality: wireless Bluetooth Speaker offer high-performance(larger 45mm) drivers and an unique enhanced bass. Just enjoy the wonderful music wherever you are. Ultra Mini: This ring box-sized bluetooth speaker fits easily into your jacket pocket or the small side pocket of your backpack (2.4in, 6.7oz cube). LED Moon Light: the LED light flash colorfully, which makes you enjoy the music in a beautiful mood..