Retekess Portable FM Transmitter Headset, Wireless Tour Guide System, 98ft Transmission, with 1 Transmitter and 10 PR13 FM Receivers for Church Translation, Factory Museum Tour

* The transmission distance of 30m in the open air; 1 broadcast can work with numerous fm receivers * Easy to operate; FM transmitter and receiver can be used by manually adjusting to the same frequency; with earphone for better listening environment * Translation system for church with 15 levels of transmit volume adjustable; small size; 7.87 x 5.91 x 1.18 inch; light weight and easy to wear * RP13 radio receivers support 5 station presets can manually store 5 favorite stations; with 24-hour digital clock; lock switch to prevent accidental operation * Long working time; the built-in lithium battery of TR503 FM Transmitter is 450mAh; which provides about 8h working time after 2-3h full recharge; receiver is power supply by 2 x AAA batteries (not included)