Frequency Range: 20 Hz – 20 KHz Impedance: Up to 32 Ω Driver: Driver Diameter: 40 mm Connectivity: 2.4G Wireless Bluetooth Battery: Battery Capacity: 850 mAh Charging Time: 1.5 hours Additional Specifications: Bluetooth Version: V5.3 Light Color: RGB Ear Coupling Style: Over‑Ear Voltage Withstand Protection: 20V