MAXHUB LM50, Lavalier/Lapel microphone, 95 dB, 20 - 20000 Hz, 16 bit, 48 kHz, Wireless MAXHUB LM50. Type: Lavalier/Lapel microphone, Microphone sensitivity: 95 dB, Microphone frequency: 20 - 20000 Hz. Connectivity technology: Wireless, Device interface: Bluetooth, Operating frequency: 2402 – 2480. Product colour: Grey. Power source: Battery/USB, Battery type: Built-in battery, Battery technology: Lithium-Ion (Li-Ion). Width: 30,4 mm, Depth: 26,1 mm, Height: 51,6 mm