RadioShack Rechargeable Wireless Headphones 33-280

everybody today I'm going to talk about the RadioShack rechargeable wireless headphones and these are the ones that they brand as technology plus these are infrared ones I believe the model is 3 3 - 280 but I'm not sure these are the specs the frequency response is quite low at the range 40 to 10,000 normally it would be between 20 to 20,000 Hertz and the signal to noise ratio is kind of high surprising part about this is that the batteries were not included even though it says rechargeable on the other hand and gives you the option to use either nickel metal hydride nickel cadmium or alkaline type batteries so let me go ahead and take the box away and show you the actual device so let me let me start talking about the transmitter this is where the infrared LEDs are right on the bottom here there's an on/off switch in the back and an RCA type left and right audio inputs and this is wher