Microphone Number of speakers 2 Audio Channels 2.0 Channels Speaker type Full range Driver diameter 6.35 cm Audio RMS performance 20 W Frequency range 85 - 20000 Hz impedance 4 Ohm noise ratio (SNR) 85 dB ports and interfaces Transmission technology Wired & Wireless WLAN No Bluetooth Yes 3.5mm connection No AUX input No Bluetooth version 5.1 Bluetooth range 10 m 6,35mm connectors Memory card size 32 GB Digital FM radio 87,5 - 108 MHz