Color: brown, silver white, light blue, black, red

Bluetooth version: 5.0

Operation Distance: 10m.

Color: brown, silver white, light blue, black, red (Optional)

Support: adjust the volume, switch songs, insert cards, answer calls, call rejection, hang up, hands-free

USB charging cable: AC input 110-240 V DC input 5 V

Standby time: 120 hours Working time: 4-5 hours

Charging time: 2 hours

Battery: 150mAh rechargeable polymer battery

-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

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

• 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

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