Is there this kind of fish finder out there?

I'm looking for a fish finder that is under $750 that has chart mapping of fresh and salt water and flasher mode together. Is there such thing? So far the models I checked has only one of the feature I want or the other and not both.

I only own Lowrance fish finders and know nothing about the features in other brands, but I am neither promoting Lowrance nor disrespecting other brands.  They're simply what I own...

I'm presuming you mean the old-style, round, dial-like display like that on the original Humminbird from the 1970's?

Many Lowrance models will let you choose to show a "flasher" display on the screen.  It's in the menu system and you have to search through the fine-print details posted online to learn that they can show a flasher.  Or visit a retailer and play with them.

It seems that I can't manage to be in a lake and out to sea at the same time, so interchangeable map cards - one marine and one for lakes - would give you what you're asking.  A lot of popular finders come bundled with a card - either lakes or ocean - and you can buy the other.
 

I only own Lowrance fish finders and know nothing about the features in other brands, but I am neither promoting Lowrance nor disrespecting other brands.  They're simply what I own...

I'm presuming you mean the old-style, round, dial-like display like that on the original Humminbird from the 1970's?

Many Lowrance models will let you choose to show a "flasher" display on the screen.  It's in the menu system and you have to search through the fine-print details posted online to learn that they can show a flasher.  Or visit a retailer and play with them.

It seems that I can't manage to be in a lake and out to sea at the same time, so interchangeable map cards - one marine and one for lakes - would give you what you're asking.  A lot of popular finders come bundled with a card - either lakes or ocean - and you can buy the other.

Thanks I'll look more into lowrance.

I don't own a Humminbird or Garmin or Dragonfly.  Those brands use map cards, too, and they may also have flasher display capability, so don't limit yourself when searching.

I have dragonfly 7 Pro - No flasher capabilities.

You can find the Lowrance HOOK series Operator's Manual here: http://www.lowrance.com/Root/Operator%20Manual/Lowrance/HOOK-SERIES_OM_EN_988-11004-002_w.pdf

Scroll to page 23 and see if that's what you're searching-for.

There's also this video of and Elite-4 (the HOOK 4 is essentially identical) showing the flasher display: