Excellent at what it does and for the $$ - Mammut Smart Belay Device

I've only used mine for a full day at the crag so far, but love it. I like the security of how it locks off easily and dynamically. Locked securely on my new (read: slippery) 10mm rope. Great for new belayers after a quick instruction set. Read the directions and you shouldn't have any problem lowering smoothly. Make sure to use two hands and my climbers can't even feel when I release it from lock

This review was written in the old system and had content requirements that are different than reviews written today.