Specifications: Frequency response:
Narrowband: 300 Hz - 3.500 Hz
Wideband: 150 Hz - 6.800 Hz
Weight:
headband version: 50 g
ear hook version: 22 g
Earpad size: 50 mm / 1.96 inches
Charging time:
0 - 50: 20 min
0 - 100: 1 h
Standby time: up to 100 h
Range:
line of sight: 180 m
in typical office building: 55 m
Talk time
Wideband: up to 8 h
Narrowband: up to 12 h
Holiday Shipping Details & Extended Holiday Returns 
