Portable fish finder

Has anyone ever used one of these?
I'm going ghetto on gear, other than safety gear, and was wondering if this is worth $50.



Get the approximate location of fish and the depth of water
Round transducer sensor with 7.5 m cable, 45-degree beam angle
LCD display with LED back-lighting
With fish depth scale and audible fish alarm
User selectable meter or feet readings
Depth range up to 100m
Display bottom rock or grass
Removable float
Brand new!
Specification:

Display : TN/ANTI-UV LCD with LED back-lighting
Depth range :0.7m to 100m (2ft to 328ft)
Sensor Beam Angle :45 degrees
Operating temperature :-4F to 158F (-20 to 70 degree)
Powered by : 4 x AAA batteries (NOT included)
Package Include:

1 x Fish Finder
1 x Round Sonar Sensor with 7.5m Cable
1 x Bolt
1 x Wing Nut
1 x Neck Strap

Thanks in advance for the input

Dude just spend another 50 and get a humminbird or an Eagle fisheasy.

Both make cheap reliable units and have the backing of customer service......

PB and J lunches for two weeks....it's worth it.

Allen

yeah, and with Eagle you get awsome coustomer support, so if anything happens they are really good at replacement.  Plus a fixed unit will have better graphics then that portable fish finder.  If size isn't a huge problem, lowrance and hummingbird both make portable fish finders that are in a box that opens up, however they are 200-300 dollars.  Best bet spend $100 and buy a small Lowrance, Eagle, or Hummingbird(my last choice).

Mike

You guys are the experts, thanks for the input.
Looks like PB&Js for a week or two to scape up the extra cash.
I was a little skeptical on it to begin with but I hate fishing blind.

Can you recommend a good place around the mid-peninsula to pick one up?