The JBL PartyBox Wireless Microphones are a pair of portable vocal mics designed to bring more freedom to your karaoke nights or presentations. These dynamic microphones use a cardioid capture pattern to focus on your voice while reducing background noise, operating across a frequency range of 50 to 15,000 Hz. They connect wirelessly via a 2.4 GHz signal to a 6.3mm jack receiver dongle, allowing you to move around your space within a range of up to 30 meters without being tethered by cables. Each black microphone is lightweight at 270 g and compact, measuring 42 x 96.5 x 18 mm, making them comfortable to hold for long periods. Power is provided by a rechargeable 600 mAh battery that offers up to 20 hours of use on a single charge, and you can easily top them up using the included USB Type-C cable. With a simple on/off switch for quick control, these mics are a practical choice for anyone looking to add wireless vocal capabilities to their audio setup.