About a year and a half or so ago, Amazon had the more complete package for $89.00 (a great deal at the time), so I bought that one as an upgrade, and gave my basic model to my son.That one is now $127.49 as of this posting - https://www.amazon.com/gp/product/B00HTN5290/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
For the ProChrono Digital....You don't need to buy the one with onboard Bluetooth.... this is what is on mine..... works great.http://www.competitionelectronics.com/product/bluetooth-adapter/Edit:.... I know see the adaptor is discontinued.... sorry for the mis info.
Tater thanks for the good words! I'm excited. But I admit that a simple mind such as mine is easily amused! Don