Description Bluedio CS4 Mini Bluetooth speaker Portable Wireless speaker Sound System 3D stereo Music surround Short Description: Material: Metal Battery: Yes Feature: None Special Feature: Wireless,Portable,Mini Speaker Structure: Hi-Fi Boxes Support Apt-x: No Support Memory Card: No Model Number: CS4 Color: Black Bluetooth Version: BT 4.1 Connection: Bluetooth ,Audio Cable Model: CS4 Crystal Clear Sound Tuned by audio experts with years of experience, the sound is incredibly clear, crisp and does not distort at high volume. When 3D sound is on, it will enhance the bass and give it better depth. Package Size: 50.0 * 20.0 * 20.0 ( cm ) Gross Weight/Package: 1.3 ( kg )