YUEHISY Dual Wireless Headphones Wireless Headphone

Specification: Item Type: TV Dual Wireless Headphones Material: ABS Headphone Battery: Li Polymer​​ Battery (Built in) 800mAh x 2 Wireless Transmission: Wireless 2.4G, Bluetooth​​ 5.4 Wired Connection: Optical, 3.5mm AUX Transmission Range: ≥30m / 98.4ft Supported Protocols: V5.4 V5.3 V5.2 V5.0 V4.2 V4.2 LE V4.0 V3.0 V2.1 and EDR Speaker Impedance: 32Ω Frequency Response: 20-20kHz Speaker Sensitivity: 115dB Battery Life: 40h How to Use: Remove the product and connect the base to the power source and sound signal for use. packing list: 2 x Headphones 1 x Base 1 x 3.5mm Cable 1 x Cable 1 x Optical Cable 1 x USB Power Supply Cable 1 x Instruction Manual