XBT M-21 Headphones

• Bluetooth version: V5.0
• Channel system: Stereo (two-channel)
• Battery capacity: 250mAh Li-ion battery
• Drive unit: 40mm
• Charging time: 2 hours
• Call duration: 12 hours
• Music duration: 15 hours
• Material: ABS
• Waterproof IPX5
• Support protocol: HSP1.0/HFP1.5/A2DP1.0/AVRCP1.3
• Sensitivity: 90 ± 3db
• Frequency range: 20-20000Hz
• Resistance: 16Ω
• Weight: 450g
• Size(L x W x H): 22*22*6cm

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.

• Comes with 3.5mm plug connector which is compatible with most of the portable devices like handsets, MP3 players, Iphone, Android etc
• High precision 40mm closed dynamic driver which bring you vivid clear sound field, sound clarity.
• Soft ear cushions allow for long-wearing comfort. Ear cushions improve wearing comfort and bass response.
• Line is equipped with a play/pause key hence more convenient to use. Frequency Response:8 Khz- 22 Khz
• Cord length: 2-3m. Splendid ambient noise isolation, Noise-cancelling microphone, adjustable and rotatable noise cancelling microphone can accept your voice clearly without confounding environmental noise

Wireless version: V5.0

Working distance: Up to 10m

Impedance: 32Ω±15%

Driver: 40mm

Frequency: 2.4GHz-2.4835Ghz

Battery: 300mAh, Rechargeable

Talking/play time: About 15 hours

Standby time: Up to 100 hours

Non-replaceable lithium ion-polymer

Power requirement: DC 5V 1A

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

Plug: USB+2*3.5mm jack
Impedance: 32Ω
Earpad material: PU
Frequency: 108dB
Drive unit: Φ40mm
Cable material: Braided cable
Cable length: 2m
Mic sensitivity: 58±2dB