Product Name: STN-18 Bluetooth Headphones Headset
• Bluetooth Version: Bluetooth V4.2

• Operating Range: Up To 10 Meters
• Speaker Drive Unit: 40mm
• Impedance: 32Ω
• Frequency: 20Hz ~ 20KHz
• Microphone: Omnidirectional HD Microphone
• Distortion: ≤ 0.1%
• Music Play Time: About 4-6 Hours
• Talking Time: About 8-10 Hours
• FM broadcasting station 
• TF card  function
• Micro-phone calling/answering phone-call
• Compatibility: For Mobile Phone, Tablet, PC, Notebook, MP3,MP4 etc