Features [Music Box] Can play soothing music through TF card or mobile phone via BT wireless connection, helping baby drift to dreamland quickly and deeply. [Rotation Mode] Designed for hangingon the baby crib and hanging some bed ringing toys, it will rotate when music is playing, which can greatly sooth the baby. [2 Power Supply Mode] 2 * AA batteries (not included) or USB power supply, both are convenient and quick to use. [Micro USB Port] You can download more soothing music for your kids freely via the included USB cable. [Premium Material] Made from high-quality ABS material, no chemical smell, secure to use and let baby to play. Specifications Color: White Material: ABS Power Supply: 2 * AA batteries (not included) USB Input: DC 5V Power: 1W (music playing mode) Sound to Noise Ratio: 70dB Product Size: 14 * 9 * 3.7cm/ 5.5 * 3.5 * 1.4inch Product Weight: 140g/ 4.9oz Package Size: 16 * 11 * 4cm/ 6.2 * 4.3 * 1.5inch Package Weight: 170g/ 5.9oz Package List 1 * Baby Musical Crib Mobile 1 * USB Cable