The MC-40BT wireless headphones feature 40 mm high-performance drivers with a frequency response of 20 Hz to 20 kHz, delivering precise audio reproduction based on Mackie's acoustic tuning. Connectivity is provided via Bluetooth 4.2 for wireless operation and a 3.5 mm input for wired use. Onboard controls allow management of volume, playback, and calls, supported by a built-in microphone. Power is supplied by a rechargeable battery offering over 30 hours of runtime, with USB-C fast charging. The closed-back, over-ear design ensures sound isolation and comfort during extended use. Includes USB-C charging cable, 3.5 mm audio cable, and a deluxe carrying case.