Wireless Microphone: Do not support mobile phone/ Macbook/computer,Not support Aux or digital audio system.Only suitable for PA equipment with MIC input jack.With 165ft range transmission distance. Headset and Handheld 2 In 1-microphones come in two parts, it can also be used as handheld mic,wireless make you more freedom to move around and demonstrate highlights or important facts, perfect for Fitness Instructor,Teacher, dancing instructor. Plug & Play - receiver and transmitter are easy to pair, turn on and short press the signal button of the receiver first, then power on and long press the signal button of the wireless mic (transmitter), they will be connected automatically Rechargeable Wireless Microphone: The dual Micro USB cable can charge both the wireless transmitter & receiver at the meantime, taking about 2-3 hours.working time more than 6 hours on a full charge. You don't have to regularly replace batteries Wide Compatibility: 2.4G wireless microphone can be use