Here's the complete description on Sweetwater:
"The Silver Snark clip-on chromatic tuner is Snark's most advanced instrument tuner yet! Featuring their "Hyper-Snark Software," the Silver Snark is the fastest and most precise Snark clip-on tuner. It boasts longer battery life than previous Snark tuners, and the addition of vulcanized rubber collars make it the most durable Snark available. Many musicians at Sweetwater keep a Snark tuner like the Silver Snark clip-on tuner in their guitar or bass case for fast, dependable tune ups."
1. "fastest and most precise Snark clip-on tuner", but there's no spec listed on time and accuracy
2. "longer battery life", but there's no spec listed for # of hours it'll work
3. "rubber collars make it the most durable Snark", but there's no MTBF comparisons
4. "musicians at Sweetwater keep a Snark tuner like the Silver Snark", so it's saying they use older Snarks; nothing to do with this Silver Snark.
For items #1 and #2, most tuners list those specs clearly. As for #3, I don't think any tuner mentions MTBF, but they don't go out of their way to mention durability (I think people just assume that if you don't step on these plastic tuners, they should just keep working). WRT #4, I guess it's like saying, "McDonald's workers should know what a great tasting burger should taste like".
Frankly, I think Snark should have kept the rubber improvement silent (or at least make a much less deal in their marketing text) and let the customers give positive reviews. Making a huge declaration like this is like saying "yes, we know our old tuners break easily. BTW, we aren't going to honor any warranty claims on this, but we know they break easily on those tabs under normal usage conditions".
I like Snark tuners, I think they are a good deal for your money especially with the new rubber improvement. However, I just can't understand how anybody can take the above description seriously.