Eco Friendly 2-in-1 Bamboo Wireless Charger and Cement Speaker Stylish 5 watt mini speaker with integrated wireless charging station made from concrete and bamboo. With Bluetooth 5.0 interface and 10 watt wireless output, you can easily recharge all your suitable devices and listen to your favorite music wirelessly, enjoying the premium audio quality the speaker provides. With powerful, rechargeable battery, hands-free function, and additional line-in. Specifications: -Bluetooth version: V5.0 -Bluetooth transmission distance: 10 meters -Loudspeaker output: 5W -Frequency : 200Hz -18kHz -Signal-To-Noise: ?90dB -Built-in Li-ion polymer battery:600mAh -Playback time (70% volume): 4hours - Coils?1pc - Input? DV5V-2A - Wireless Output?10W -Material: Cement+Bamboo -Dimension: 107*75*64mm/4.