If it weren't for that donut around the middle, I would buy this. I'm honestly not sure how they settled on this design. I understand it serves a purpose in protecting the charge port, but there are other lights out there that fixed that issue without having to add an ugly, bulky ring.
IanEDCI've had one other Nightcore light that has the donut on it and it's hands down the most waterproof/durable flashlight I've had. Never had anything get into the charging port and it's remained dry and sealed through all types of immersion including diving in a lake looking for some lost keys on the bottom. While not my favorite feature I'll put up with that ring for the sheer practical usefulness of that system.