Headphones Coolbox

Speaker: 2x40mm diameter, with extraordinarily clear sound, deep bass, and enhanced treble.Full battery life: non-removable internal 800mAh lithium battery.Bluetooth 5.4, 2.4 GHz Wireless, or 3.5mm jack connectivity: this revision of the Bluetooth connection is an improvement in energy consumption, allowing for extended battery life.Additionally, they feature a wired 3.5mm jack connector for compatibility with devices that do not have Bluetooth connectivity (jack cable included), and wireless connection.Ergonomic design: very comfortable to use, adjustable, and with memory foam covered by soft, breathable fabric for hours of comfortable wear.Its removable microphone also adds convenience when …