Hi all, Here are some basic descriptions and directions for using the Miccus bluetooth devices we carry. First of all though, I want to assure you of a few points. 1. It's difficult to turn these devices on accidentaly, as one needs to hold the button down for 3 seconds to turn them on. 2. These devices go into a power saving mode if they're not being used, so even if you do manage to turn them on accidentally, it'll go into the power saving mode shortly thereafter. 3. If one follows the directions, one can operate these devices even if totally blind as I am. 4. When I state holding a button down for a specific number of seconds, I'm speaking of actual seconds as in 1-Mississippi, 2-Mississippi, etc. Rattling off 1 2 3 as quickly as you can is not considered 3 seconds. Remember, you want to use the device, not see how fast you can count. (smiles) The TX is a bluetooth device which enables any device with a headphone jack to transmit its signal via bluetooth to another bluetooth enabled device. If you want to hear your player's content on another bluetooth enabled device such as bluetooth headphones, speakers, etc, you would want this device. It has a range of about 30 feet. I used it to play my player's content on our car stereo, home stereo, computer speakers, and even the earphones which come packaged with the players. See below to find out how I managed to receive bluetooth signals on the above non-bluetooth devices. The RX is a bluetooth device which enables any device with an audio in to receive bluetooth signals. You can use this device to enable your non-bluetooth headphones, speakers, stereo system, car stereo, etc, to receive bluetooth signals. It has a range of about 30 feet. I plugged my earphones and computer speakers into this device and was able to listen to my player without any wires connected to my player. I also used it to listen to my player on our car stereo. The above two items are small portable devices with a rechargeable battery. They're smaller than a Sansa Clip player. Both the TX and RX devices have one button on them. This button is used to control the device. One turns the device on by holding the button down for 3 seconds. To turn the device off, one holds the button down for 5 seconds. To engage the pairing feature, one holds the button down for 8 seconds. Note that when wanting to engage the pairing feature, one doesn't turn the device on first, just hold the button down for 8 seconds. The RTX is a home-based bluetooth device which is designed to sit on your entertainment system or desk. It can either transmit or receive bluetooth signals. It has 3 buttons on the face. The left button is the transmitter button, the button in the center is the power button, and the button on the right is the receiver button. If you wanted to listen to your stereo on your bluetooth enabled headphones from anywhere in your house, you would use it as a transmitter which is on the left side. If you wanted to hear the audio content from your bluetooth enabled device on your stereo system, you would use it as a receiver which is on the right side. It has a longer range of about 150 feet. This is not meant to be a portable device, doesn't have a rechargeable battery, and it's plugged into the wall and connected to your stereo system, A/V center, etc with actual cables. The RTX has 3 buttons on the face. The middle button is the power button which one holds down for 3 seconds to turn it on, and one holds it down for 3 seconds to turn it off. The button on the left is for transmitting, and the one on the right is for receiving. To engage the pairing feature on the RTX, one holds either the transmit or receive button down for 5 seconds. When pairing is successful, one will hear a sound. If pairing with either the TX or the RX, just hold the button on the RX or TX down for 8 seconds and put then next to each other. If pairing with a smartphone, tablet, laptop, or bluetooth headphones, one selects the miccus RTX on that particular device and puts them close to each other. The TX, RX, and RTX will remember whichever device they're paired with when they're near them, so one wouldn't need to pair them again each time one wants to use them together. If one has paired one device with the RTX and now one wishes to pair a different device with it, one needs to unplug the USB cable for 15 seconds to clear it. Once one has reconnected the USB cable, one would turn it on and pair it with the new device as covered above. If the TX does not reconnect with a receiver when in range, one may need to briefly press the button. This was my first experience with bluetooth devices, and I was very happy with the results. I can see many possibilities for using these devices. If I want, I can listen to my computer and whatever sound is being played from a distance while I'm doing something else. One can listen to one's stereo system, A/V entertainment system from anywhere in the house, even lying in bed or while in the yard. All without any wires getting in the way. Once one has grasped the simplicity of the controls, then one can come up with many other uses for these bluetooth devices. It really opens the door to freedom from wires which in my own humble opinion just tend to get in the way of whatever I'm doing. If anyone has any questions, then please let me know. All the best, Laz -- Talking MP3 Players with stereo FM radio, voice recording, and expandible memory! Priced under $100, plus free shipping in the US! 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