This speaker does not have internal storage and requires an external Bluetooth device (like your phone) for playback. Made of durable ABS material. Compact and fun design. Wireless connection to your phone after pairing. Specs: - Model: Building Block Bluetooth Speaker - Bluetooth Version: 2.0 - Note: Requires connection to a music output source - Block Dimensions: 5x4x5 units Usage: 1. Connect the speaker to a compatible battery case. 2. Enable Bluetooth on your phone and search for devices. 3. Select the speaker's pairing name to connect. 4. Play audio wirelessly after successful pairing. Type: 1PCS Building Block Bluetooth Speaker (battery case not included). Color: As pictured (minor variations may occur due to lighting/screen differences). Package includes: 1 Building Block Bluetooth Speaker Note: Slight size variations (1-3cm) possible.