Wireless Bluetooth 4.0 Earphone Stereo Headset

         Bluetooth 4.0 Earphone Stereo Headset.

• Compatible With All Smart Phones, android, Phone,Tablet PC, etc And
  More.
• Brand new and high quality.
• 4.0 smart chip,Efficient transmission speed.
• Compact, ultra Light Design Stereo Bluetooth Headset, Portable And
  Easy To Carry.
• High-fidelity sound quality
• Voice report number, low power remind,Connect/disconnect
  remind,Boot off prompts.
• Allows you to conveniently answer calls while driving.
• Supports Two Mobile Phones Simultaneously Connected.
• Long battery life, fast charging.
• Support WeChat, QQ, skype, whatsapp voice calls, movie
• Bluetooth V4.0, Superior CompatibilitySpecifications:
• 1. Drive: 40 mm
• 2. Impedance: 32 OHM
• 3. Bluetooth version: Bluetooth v4.0 + EDR
• 4. Power Level: CLASS II
• 5. Output Power: 30mW
• 6. Bluetooth distance: 10 meters barrier
• 7. Frequency response: 20-20000 Hz
• 8. Operating voltage range: 3.0V-4.2V
• 9. Microphone sensitivity: -42dB
• 10. with A2DP / AVRCP high-quality stereo audio transmission and
  remote control protocol
• 11. Powerful noise noise cancellation circuit (Active Noise
  Reduction)
• 12. Wired and Bluetooth automatically switch to support audio input
• 13. Charging time is about 1 hour (power indicator Charging: blue
  light
• 14. Fully charged: blue light goes out
• 15. Dimensions: Diameter length 20MM. Width 15MM. 18mm high
• 16. Weight about 4g
• 17. Talk time About 4 hours
• 18. Music for about 3 hours
• 19. The standby time is about 3-4 days
• 20. Charging Power: DC5V Power Interface [the hole] (computer USB
  port, mobile phone charger, car charger)
• 21. Compatible: Compatible with Android, Apple, Microsoft, Symbian
  99% of with Bluetooth cell phones(IOS cell phone has power display)