Legit Reviews posted a review on the Phiaton PS 20 Bluetooth Stereo Earphones

The Phiaton PS 20 BT comes in a nice looking retail box with a full color front with a metallic inlay that looks sharp. The product is clearly visible and the front of the box tells you just the basics to keep things simple. As the box states, this stereo headset is for listening to music, movies or whatever and can also be used to take calls.

Phiaton PS 20 BT Controller Specifications:

Communication Network: Bluetooth standard Version 3.0
Operating Range: Within 10m
Bluetooth Profile: Support A2DP, AVRCP, HFP, HSP
Battery: lithium polymer DC3.7V / 150mA
Battery Life: 250 Hours Standby / 6 Hours Calling & Music
Microphone Frequency Response : 10 ~ 4,000Hz
Microphone Sensitivity: -40 dB
Microphone Noise Cancellation: Yes
Dimensions: 51 x 30 x 17( mm)
Weight: 16 g

Phiaton PS 20 BT Earphone Specifications:

Driver Type: 14.3mm Dynamic
Sensitivity: 110 dB/mW
Frequency Response: 15 ~ 22,000Hz
Impedance: 32 ohms
THD: Less than 1% at 1 kHz
Sensitivity: 101dB at 1 kHz
Maximum input power: 30 mW
Weight: 13 g
Cord Length: 1.2 m

  Phiaton PS 20 Bluetooth Stereo Earphones Review