... .Maximum receive distance: 30M 4.Power: 4*AAA HY-E814 FM wireless earphonesWireless headphonesHeadphone frequency range: 83-108MHzMaximum receive distance: 30MMulti direction ... , CD, HI-FI…Applications: TV, computer, DVD, VCD, Audio devices, with FM auto scan radio6 LED light for decorationPower: 4*AAA (not ... a master cartonLoading Qty: 20': 4500pcs, 40': 9324pcs, 40HQ: 10852pcs FM Wireless Earphones