LED WIRELESS CHARGING SPEAKER Technical Parameter: Wireless charging power: 15W Bluetooth version: 5.3 Bluetooth name: BT3401 Output power: 5W Bluetooth frequency: 2.4GHZ-2.48GHZ Transmission distance: 10 meters Frequency sound range: 50 HZ-20 KHZ Sigto noise ratio of whole machine: greater than 75 db Built-in lithium battery voltage: 3.7V charging input: DC5V/500MA Packing Box Size : 247*240*87 mm Product size: 235 * 80 * 238 mm Product weight: 770g Printing Option : Screen