Celltronix Titanium True Wireless Earbuds with Charging Case. These earbuds feature Bluetooth 5.0 technology for a stable connection up to 10 meters, and a built-in microphone for hands-free calls. They offer up to 1.5 hours of continuous play time with a 50mAh earbud battery and 1.5 hours charge time. Additional specifications include a frequency response of 20Hz-20KHz and a sensitivity of 105dB + 3dB. A Micro USB charging cable is included.