Retekess Case of 1 Transmitter 15 Receivers 1 Charging Base,Retekess TT122,Wireless Tour Guide System Rechargable,Church Translation System,Multichannel Interpreter Device for Court,School,Training,Plant

* FCC certified. TX: 2AAR8TT122;RX: 2AAR8TT122A; Easy to use; one-button frequency; adjusts channel to the same one with only one key instead of complex operation; suitable for large-scale occasions such as tour guides and conference translation * Long-distance reception; 492ft/150m working range in the open air; you have more space to enjoy the view * Large-capacity battery; the tour guide system built-in 1500mAh rechargeable lithium battery; transmitter can be used for 12 hours; receivers up to 18 hours; reduce the charging time * Ear-hook earphone; no need to plug into your ears; cleaner and more hygienic; comfortable even worn for a long time; 3.5mm universal jack; you can also use your own earphones * AUX function; just need a cable(not included) to connect your external device; transmit an external audio source such as church PA system soundboard from a portable player via your transmitter