Specification:
Bluetooth v5.0 BES 2300
Speaker: Φ40mm Dynamic, Neodymium Magnet
Impedance: 32 Ohm
Input Power: DC 5V, USB-B
Lithium Battery Capacity: 450 mAh
Charging Time: 2.5H
3 Microphones for Noise Cancellation & Calls
Volume +/-, Music Remote control,  Activate Siri & Google Assistant

Product Content:
1x Headphone
1x User Manual
1x USB-B Charging Cable