4-27-2011. It's now 11 months since I bought the Franklin TES 121 Translator. I spent a total of $14 for mine, but I'd pay $20 without a second thought today. I carry it with me everyday. I am still really happy with it and cannot identify with the bad reviews of it I have read. Without paying attention to whether it has 800,000 translations or whatever, it has very high functionality for me, but of course for you that will depend on where you are in your study of Spanish. Here are my positive and negative comments. First, stripped of its packaging, it is 2-3/8" by 4-1/16" by 1/2" closed, and weighs exactly 2.8 ounces. I use my fingernail to open the protective cover. It fits my men's shirt pockets but I carry it in my cargo pants pocket where it won't slip out. It translates both ways, Spanish to English and English to Spanish (it has other features like World Clock, Conversions, four groups of Phrases, Games, and Calculator, etc., but I rarely use those). It is somewhat hard to read: this type of display is miserly in using battery power. You have to tilt it this way or that in SOME ambient light, to read the screen. It shuts off automatically after 1 or 2 minutes. But, in 11 months of everyday use, I have not had to replace the battery. And, yes, there are a number of words it does not seem to have a translation for. The good aspects for me, however, are that there are plenty of words I am interested in that it does translate, prominent nouns and verbs. I took 1 year of college Spanish in 1975 and from time to time since then have looked up English-Spanish-English translations. I often use Spanish phrases with my 12 yr old daughter and my significant other, both of whom are taking Spanish courses, and I listen several times a week to Spanish radio and television stations.
The Franklin TES 121 is particularly useful for that level of Spanish learning, e.g., because it shows the conjugations of verbs, both the Spanish and the English together, one on one line, the other on the next line below it, both lines viewable at the same time, all the tenses from the present to the future and past and imperative and conditional, etc. Caveat: you do frequently have to "arrow right" or "arrow left" to read longer translations. Anyhow, as an example, on the screen below "I dream" is "yo sueño." On the screen below "You went" is "tu fuiste." And on the screen below "we had gone," is "nosotros habíamos ido" but for that you have to "arrow right" a few characters to see it all, etc. This happens to be far more useful to me for looking up verbs than a 1" thick verb book that doesn't fit in my pocket. Plus, all the verb books I've seen do not have the English equivalent side-by-side with the Spanish! However, one deficiency with the TES 121 is that some, but not all, important irregular verbs do not have translations; e.g., "I make" is translated as "Yo ----", i.e, with blanks instead of "Yo hago." But it is excellent for the regular verbs like caminar, comer and escribir; and good for irregular verbs like decir and contar.
Further, contrary to the bad Amazon reviews of this product that I have read, the Franklin TES 121 DOES appropriately translate the words, spinach, lettuce, frog, best, string beans, etc!
It appears, unfortunately, that bad reviews of the Franklin TES 120 got mixed in with reviews intended for the Franklin TES 121. In any event, if you're at a level of learning Spanish such that you want something handy and functional for the verbs and nouns that pop into your head during the day, the TES 121 is a highly functional tool for the money.