Just got it :) Unit does what it says it suppose to do (So Far anyway)! The internal plant database is real Small (not upgradable or programmable - that's the only negative). Seems to work well & its accurate! checked Online before buying this and some of the Reviews were Not very good (bought lemons?): screen hard to read (maybe a little), not working (mine works right out of the box - so far), not accurate (mine seems to be), internal plant database pretty small (I would agree on this 1)...! Overall presently, I'm happy with the unit & purchase... :)