Bluetooth Solution: ChinaCache AB8922

Bluetooth Version: V5.4

Material: PC+Titanium Alloy+Silicone

Bluetooth Reception Range: 10-15 meters

Battery Capacity: 500mAh

Speaker: Ø40*40mm Titanium Diaphragm with Composite Layer BOX Speaker

Usage Time: About 35 hours

Bluetooth Frequency: 2.4GHz-2.48GHz

Operating Temperature: -10°C to +50°C

*Adopting a titanium membrane composite membrane BOX speaker.

*Comes with magnetic ear muffs with leather case, no pop-up windows.