Sound system sound with outside commotion decrease - 33-foot remote range - Built-in receiver for sans hands use - Multi-work on-ear catches for noting calls and controlling music - Adjustable headband with agreeable over-the-ear cups - 4+ long stretches of sound recess - Includes delicate convey sack, 3.5mm aux earphone jack rope and miniaturized scale USB link - Frequency: 2.4 GHz - Rechargeable lithium-particle battery - Charge time: 2-3 hours - Playtime: as long as 5 hours - Individually retail bundled. 7.3" W x 6.9" H x 2.7" D