The Olight iTHX is a tiny twist-on keychain light in orange. Tighten the head once for a 5-lumen low and again for a 150-lumen high, and loosen it to step back down and switch off. There are no buttons to bump in a pocket.
A built-in rechargeable cell means no coin batteries to replace. Unscrew the head to reach the charging port; a small indicator shows red while charging and blue when full. A split ring on the tail clips it to your keys.
Specifications