I found out just how durable my SL 4AA LED light is tonight. Usually after my walk with my dog, I'll throw the light (while on) across my yard and let my dog get it. Tonight, it was more fun with the small amount of snow on the ground and the dog was loving it. Well my 2nd to last throw was a doozy. I hucked it (approx. 125 feet) and it bounced off my picnic bench into my fence. Bleieve it or not, it surrived----un-scathed and still on. Lens is fine too. What a darn good product!