Key Features:

• Product Name: New Arrival Over Ear Bluetooth Wireless and Wired Hi-Fi Stereo Headphone
• Model No: NIA-S4000
• Function: Wireless and Wired connection , support TF Card/FM Radio play ,APP controlling
• Color: Black
• Audio interface: 3.5MM
• Frequency: 20Hz-20KHz
• Impedance: 32Ω
• Driver Unit: 40MM HD Driver Unit
• Standby Time: 200Hours
• Charging Time: 2 Hours
• Working Time: 6-8 Hours
• Battery: 250mAh
• Transmission Distance: 10M