Boasting a powerful speaker and a wireless phone charger, the bamboo and fabric combination makes this product an attractive addition to any modern home or workplace. The speaker does not need to be connected to a power source to work, only to charge. However, this item needs to be connected to a power source for the wireless charging function to operate. to use the wireless charging function, the device being charged must be wireless charging compatible. 13 ( d ) x 8.2 ( h ) cm ABS, fabric, bamboo & silicone lithium polymer battery audio playback time: 4 – 6 hours audio recharge time: 4 hours includes USB charging cable bluetooth V 5.3 10 metre visible distance battery capacity: 1200mAh speaker power: 5W frequency: 150Hz 15KHz input : 5V / 1A wireless output: 5W wireless charging distance : 6mm packaged in a Swiss Cougar gift box