Features : 

* Mini in-ear Bluetooth Handsfree headsets
* Ideal for in-ear calling or working use, compatible to Iphones, Samsung, LG and other smartphones
* Wireless earbud with built-in 80 mAh polymer battery for up to 8 hours talking time or music time.
 
Specifications 
* Bluetooth CSR 4.0 EDR
*Frequency range : 2.4GHz - 2.48 GHz
* Transmission : Class 2
* Smart DPS Noise reduction
* Battery 80 mAh polymer Lithium
* Transmission distance : 10 meter
*Talking time : 8 hour
* Standby time : 120 hour
*Charging time : 1-2 hour
* Microphone sensitivity : -42dB (odB = 1V/Pa 1 KHz)