Each box contains a pair of sleek digital handheld microphones alongside a compact, rechargeable 2.4GHz wireless receiver dongle that offers a stable audio transmission range up to 30 meters. Engineered primarily to pair seamlessly with any speaker in the JBL PartyBox lineup, these microphones feature a cardioid pickup pattern, a built-in foam pop filter, and an internal shock mount system to collectively eliminate background noise, breathing pops, and handling vibrations. The microphones are highly portable, delivering up to 20 hours of continuous runtime per charge, and they can even be utilized while plugged into a speaker's power bank to keep social events, parties, and announcements moving without interruption.