The product worked straight away - paired quickly with Bluetooth devices. I have a Bose Sound Dock Version 1 with the very first iPhone 30 pin connector. It was quite expensive but not usable until I bought this unit so now I have a very economical way to continue using an otherwise excellent sound system! Please note that this manufacturer also sells a similar device (https://www.amazon.com/gp/product/B07F9Q81HM/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1) which will NOT work with Sound Dock 1.
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