The MDR-XB400BY headphones are equipped with a 3.5mm AUX connection so you can enjoy your favorite songs on a variety of devices when the battery runs out.
FM receiver.
MP3 player with microSD / TF memory cards.
Bluetooth wireless communication.
The presence of a microphone is available.
Possibility to connect as a Hands-free Pcone Call headset.
Wireless connection – Bluetooth V3.0.
Speaker diameter – 40mm.
The maximum output power is 50mW.
Resistance – 32ohms at 1kHz.
Sensitivity – 108dB / mW.
The reproducible frequency range is 20-20000Hz.
FM receiver – 87.5MHz to 108MHz (autosearch, station memory).
Supported memory cards – microSD / TF up to 32Gb.
AUX input 3.5mm.

-noise cancelation
-premium sound
-smart listening technology
-wear all day in total comfort
-clear hands-free calling
Model Number ; KD73
Style : Headband
Communication : Wireless
Use : Portable Media Player, Mobile Phone, COMPUTER, Gaming, Sports, Travel, PROFESSIONAL, HiFi Headphone

Brand: Awei

Model: ES-770i

Sound Mode: Stereo

Sound Effects: 7.1 Virtual Surround Sound

Earphone Frequency Range: 20Hz – 20kHz

Earphone Impedance: 20 Ohm

Microphone Direction: Omni-Directional

Output Power: 20mW(1KHz 0dB)

Sensitivity: >110dB

Connectors: USB-A, 3.5mm Audio Jack

Working Current: About 90mAh

Input Voltage: 5V (Type-A)

Length Of Cable: 2.1 Meter

Weight: 300g

Brand : AWEI GM-1 / GM-2

Temperature : 10-55’C

Cable Length : 2100MM

Net Weight : About 30G

SNR : >110dB

THD : <1%(1KHz 0dB)

Output Power : 20mW (1KHz 0dB)