Synchronous connection of two pairs of headphones

Design: Invoices
Product color: Glossy black, grey, black
Description: Design: on-ear, device type: wireless headphones, functions: multipoint, operating time: 6 h
Functions: Multipoint
Working hours: 6 h
Battery capacity: 180 mAh
Standby time: 120 h
Talk Time: 6 h
Charging time: 5 h
Device type: Wireless headphones
Mount type: Headband
Bluetooth version: 5.0
Wireless connection type: Bluetooth