In Flashlight SST-20-DR 660nm deep red LED compared to the Sofirn ST10 deep red. February 21, 2026 I don't know what red LED the ST10 is using, but it's definitely 660nm. I just thought it was an interesting deep red LED comparison. Both are great for preserving your night vision. by mtbohana flashFlashlightlight Prev Post My Daily Carry February 21, 2026 Next Post My pocket sword arrived February 21, 2026 Related Posts “hidden moonlight” on convoy ramping drivers April 23, 2026 Wurkkos DL04 – Good stuff April 23, 2026 My Hotel In Tokyo Has An Emergency Light Powered By D Cells April 23, 2026 Write A CommentYou must be logged in to post a comment.