True Wireless Sport Earbuds True Wireless Earbuds with Amazing Stereo Sound Built-in Microphone for Making Phone Calls Wirelessly with Your Smartphone. Super Lightweight Charge & Store the Earbuds All in One Bluetooth Version: 5.0 Frequency Range: 20Hz-20KHz Transmitting Distance: 10M Speaker: 14mm Music and Talk Time: 5hrs. Standby Time: Up to 120hrs. Impedance: 32 ohm Sensitivity: /-3dB Distortion: <0.5% Battery: 3V/70mAh Charging Case: 350mAh Charging Cable Included Accessories: Charging Cable and Manual