Eklasse Bluetooth Active Noise Canceling Headphone

Eklasse Bluetooth Active Noise Canceling Headphone.

• Bluetooth: Version 4.1
• Noise Reduction: Up to 20dB between 100 to 500Hz
• Battery: Lithium Battery 250mAh
• Driver Unit: 40mm Neodymium
• Sensitivity: 99dB±3dB
• Frequency: 20Hz-20KHz
• Impedance: 32Ohms
• Working Time: 8 Hours at medium volume with BT and ANC On