It is not shake-awake, the way that everyone understands it. After napping for two hours, it goes to sleep and will not wake from that. I can imagine a military usefulness for that, but for a civilian home-defense build it is useless. The whole idea is that it wakes immediately, without warning, when needed. This is a must-have feature for me and I would return it but for the return policy. After shipping and re-stock fees, I would effectively still have paid for it and not have anything.
I have other ohunt gear and have always been very pleased with it. I cannot gauge this against other 1x prisms, as my others are other-brand 3x and 5x, but I am disappointed with how difficult it is to sync my vision with both eyes open. Not sure if it is slightly over or under 1x (or if it is some other visual quality), but it is far more difficult to use than some cheapo plain red dots that I have. The reticle is crisp, and the illumination is dead-on after you uncross your eyes and adjust your vision.
I was excited to order this, and ended up stuck with something I feel was misrepresented. Shake-awake means "from sleep," not a nap.