Quick overview from the supplier:
Bluetooth Headset SVEN AP-B700MV with Mic, Black, 4pin 3.5mm mini-jack
Compatible with PCs, Media-players and mobile devices
5.0 Bluetooth wireless signal transmission
Call acceptance function
Wired/wireless audio signal transmission
Track switching control possibility
Convenient design
Micro USB jack jack for battery charging
Battery operation time up to 8 hours
Radius of operation up to 10 m
https://www.sven.fi/en/catalog/headsets/ap-b700mv.htm?sphrase_id=2193961
