Supersonic IQ-140TWS - Black True Wireless SPORT Earbuds Built-in microphone ; Super lightweight; Charge and store the earbuds at the same time; Bluetooth(R) version: 5.0; Frequency range: 20 Hz to 20 KHz; Transmitting distance: up to 32 ft.; Speaker: 14 mm; Music and talk time: up to 5 hours; Standby time: up to 120 hours; Impedance: 32 ohm ; Sensitivity: +/-3dB; Distortion: