New Sleeping Treasury Bone Conduction Bluetooth Speaker $ 16.08 Product information: Power type: lithium battery Color: blue and white Frequency range: 100HZ-20KHZ Rated Voltage: 3.7 Additional features: card insertion Applicable scenarios: home, mobile/Portable Rated Power: 3 Product size: 15.5cmX3.6cmX2.9cm Packing list: Speaker * 1 Product Image: