The speaker parts has no storage function, need external blue-tooth playback, such as your phone. Made of high-quality materials. Very interesting. After sucessful connection,you can play music wireless on your phone. Compact size. Name:Building Block Bluetooth Speaker Bluetooth:Bluetooth 2.0 Note:Need to connect to music output port Building block unit:5x4x5 How to use it: 1. Connect the speaker to building block battery case 2. Turn on the blue-tooth function of your phone and search for blue-tooth device 3. Search for the speaker with a pairing name and click to pair 4. After sucessful connection,you can play music wireless on your phone. Type:B:2PCS Building Block Bluetooth Speaker,Without battery box Colour:As Shown Material:ABS Package Contents: 2 * Building Block Bluetooth Speaker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.