I would give this one a try. my mandolin and guitars are never in direct sunlight the stage is usually covered or it's evening or indoors . before the show I tune up I leave this one clipped to my Gibson F5 I love the size it's easy to use and see. very cheap priced .The first tuners were bulky and expensive. Not so todays tuners are automatic. I must have 6 different tuners this one is my favorite. good luck with your gigs
I've been using these for a couple years and I do like them however they're not great in bright light. I can "usually" find a position where I can read it (i.e.: shady spot, cover with my hand, turn away from light) It's still my favorite clip on due to the small size and accuracy.... and the 10 buck price!