Bone Conduction Headphones Wireless Bluetooth Stereo Headset Over Ear Sweatproof Earphone with Microphone for Sports (Black+Blue)

We’re the manufacturer of bone conduction headphones and we have been providing technology and customer service to our customers for many years. We will continue to make progress for better products and services for our customers, old and new.

Blue tooth Version: V4.2 (completely compatible V2.1/V3.0/V4.0/V4.1?V2.1+ EDR and V3.0 + HS).
Bluetooth Class: Class1, Class2, and Class 3 PA.
Effective range: 10m (33feets).
2 in 1 Function: It may connect two devices with bluetooth at the same time.
Telegram phone number (the headphone will voice broadcast the caller ID).
Battery: 200mAh Polymer battery.
Input: DC 5V 
Play time: 5-6 hours.
Standby time: 10days.
   Mono/Stereo: Stereo. 
Receiving Sensitivity: 88dBm. 
Impedance: 32db.
Frequency range:20-20KHz.
  Mic: Anti-interference microphones, -50DB. 
Charging: MicroUSB port and need 2h. 
Material:Silica gel
Product Dimensions?137.3*123.66*49 MM.
Weight: 39g.
Color: Blue+Black.
FCC ID: 2AJTS-ES268P

Package: 
1*Bone Conduction Headphone 
1*Charge Cable 
1*User Manual



Notes:
1.Please charge it fully before first use.
2.Locate and connect the bluetooth within 33 feets(10 meters) please.
3.Please think twice before you buy one if you have a very big head, for which we're very sorry, we design the size of headsets according to the head size of Asians. 
4.If you usually wear glasses, this type of bone conduction headphones may not suit you, because they both have to occupy the position above the ears.
Please read the user manual before using the headphone, and contact us anytime you have any questions. Thanks.