Bluetooth Receiver for Old Stereo, 3.5mm AUX Bluetooth Audio Adapter for Stereo Receiver Wired Speakers Home Theater Amplifier, with RCA L/R 3.5mm Jack Low Latency for Music Streaming, TF Card Play music_update_2020 return spring is made of

return spring is made of high quality stainless steel

metal door

5 to 10 drops per time is good enough

4 adapter modules and 4 female to female jumper wires

Bluetooth Receiver for Old Stereo, 3.5mm AUX Bluetooth Audio Adapter for Stereo Receiver Wired Speakers Home Theater Amplifier, with RCA L/R 3.5mm Jack Low Latency for Music Streaming, TF Card Play music_update_2020 return spring is made ofBluetooth Receiver for Old Stereo, 3. 5mm AUX Bluetooth Audio Adapter for Stereo Receiver Wired Speakers Home Theater Amplifier, with RCA L R 3. 5mm Jack Low Latency for Music Streaming, TF Card Play Product Features Bluetooth Receiver for Old Stereo: Our Bluetooth receiver can upgrade your non Bluetooth audio systems, such as stereo receiver wired speakers home theaters amplifiers AV receivers, into Bluetooth enabled devices. Wirelessly play music