The Jabra Connect 4s is a versatile Bluetooth device perfect for mobile jobs and home use. With powerful sound and crystal clear voice calls, this speakerphone capability headset offers convenience and efficiency. It features a battery status indicator, on/off button, and volume control for easy use. The dual-band Bluetooth v4.0 standard ensures reliable connectivity, while the unlocked feature allows for seamless integration with various devices. Compatible with computers and mobile phones, this black headset with built-in rechargeable battery is a must-have for those looking for a high-quality wireless communication solution.