XBT M-21 Headphones

Bluetooth Version: 5.0
Battery Capacity: 300mAh
Play Time: 20h
Charging Time: 2h
Diameter: 40mm
Impedance: 32Ω
Sensitivity: 98±3dB at 1000HZ
Best Transmission Distance: ＜1M
Maximum Transmission Distance: 10M
Wearing Method: Head-Mounted

Article name: wired headphone
Material: plastic, metal
Speaker diameter: 40mm
Sensitivity: 115db
Impedance: 32
Frequency response range: 20hz-20khz
Microphone: 6.0 x 5.0mm
Plug: 3.5mm
Microphone impedance: 2.2k
Features: wired, noise reduction, comfortable to wear
Cable length: 1.20.3m/47.24 inches 11.81 inches (approx. )
Size: 14.5 cm x 12 cm x 6 cm/5.71 inches x 4.72 inches x 2.36 inches (approx.)

-Model number: A770BL
– Bluetooth version: 5.0
– Battery capacity: 250mAh
– Standby time: up to 25h
– Talking time: up to 10h
– Playing time: up to 13h
– Charging time: 1h
– Transmission distance: up to 10m
– Frequency response: 20-20kHz
– Connectivity: Bluetooth, 3,5mm aux-in

• 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