Promate HomeCloud 3-in-1 Cloud Design Wireless Speaker with LED Nightlight and Wireless Charger: Technical Specifications:Input: DC 9V/3A, 27W • Input Interface: USB-C • Chipset: Mvsilicon         Bluetooth Version:5.0 Bluetooth Frequency: 2400-2483.5MHz,Speaker Output: 5W*2Impedance:  4Ω*2,Speaker Frequency Range:  F0