Retekess TR101 Headphones Radio FM Testing Headphones for Testing and Tour Guide Wireless Receiver (10 Pack,Black)

hello everyone this is mia from red case official uh today i'm going to show you how to use the tr503 and tr104 fm receiver now let me show you the transmitter first this is the tr503 transmitter you now it's the turnout mode and you can turn it off and turn it on and you can press this to show you can see this is the volume you can press left and right to increase or decrease the volume this is the frequency you can change the frequency by right and left as well and it's quite easy and you can charge it here you can see okay now let me show you how to use the tr5104 and this is for battery you need to open it to turn uh you need to buy two 3a batteries it's not included now you can see this is the turnout button and this is the left and right to turn up and down the volume and the frequency this is for storage stations it can store range eight stations total press this you can see it's