BY-LM40 USB Digital Lavalier Microphone The BOYA BY-LM40 is a high quality omni-directional lavalier microphone with a USB port for your computer. Compatible with both Mac and Windows computers Equipped with a USB-A output connector, the BY-LM40 can be connected to Mac and Windows computers with a USB-A interface. Its omni-directional capsule picks up and delivers warm sound to the computer via a 4-meter (13-foot) audio cable. Plug and play No procedures required for the drive or external batteries for power , users can connect it to computers and start. Output connector: USB-A Polar pattern: Omni-directional Frequency range: 100-10000Hz > Sensitivity: -38 2dB Signal to noise ratio: 65dB Sampling frequency: 24bit / 48KHz Cable length: 4m (13 feet) Weight: 36g (1.27oz)