Bluetooth handset. It allows you to listen to your favorite music and talk freely. Wireless transfer allows you to enjoy your favorite music without the need for a cable. The built-in microphone enables convenient conversation. High battery capacity (70 mAh) ensures long-lasting operation extended to 5 hours. Compact size and lightweight design make it easy to carry and store the product. Specification: Bluetooth version: V5.0 + EDR Transmission distance: 10m Impedance: 16 Ohm Battery: 70 mAh Playing time: 5 h (70% volume) Charging time: 1.5 h