Headphones Koss BT221i

Design: Invoices
Description: Design: on-ear, device type: wireless headphones, design features: microphone, functions: volume control, operating time: 6 hours
Additional Information: Answer/end conversation: yes; Neck lace/headband: yes; Work profile support: HFP Hands-free,Headset
Functions: Volume control
Working hours: 6 h
Design features: Microphone
Device type: Wireless headphones
Mount type: Ear mount
Maximum playback frequency: 20000 Hz
Minimum repeatable frequency: 18 Hz
Technology: Dynamic
Bluetooth version: 4.2
Wireless connection type: Bluetooth