Connection technology: Wireless, Wired

Wireless technology: Bluetooth / 2.4GHz radio frequency

Battery: 500 mAh, 3.7V

Playing duration: 28 hours (Bluetooth), 12 hours (2.4GHz)

Speaker diameter: 40 millimeters

Impedance: 32 ohms

Sensitivity: 100 dB ± 3 dB

Frequency response: 20 Hz - 20 kHz

Microphone sensitivity: - 38 dB ± 2 dB

Microphone impedance: 2.2k ohms

Microphone directionality: Omnidirectional

Plug type: 3.5mm cable