Xiaomi QBH4041 Bluetooth Speaker Wireless Portable Stereo Mini Bluetooth 4.0 Square Box Speakers for Smartphone Computer, Blue Bluetooth 4.0, support aux-in audio cable, support up to 32gb micro SD card High quality speaker that supports music playback, can pair with smartphone, tablet, TV and laptop Built-in microphone enable answer calls facing mic without finding your smartphone Beautiful design, precision construction, awesome sound Made from a single piece of aluminum, each casing is formed by high-precision CNC digital cutting