The NiteCore T5s Flashlight is a tiny keyring flashlight with a smooth stainless steel finish and three brightness levels and a warning signal mode. This compact pocket light requires only a single common AAA battery (not included), and its ultra-compact size means it's easy to keep on your person at all times. The NightCore T5s Flashlight is compact and lightweight, with a maximum output of 65 lumens. This pocket light features a high-efficiency CREE R2 LED bulb, with a lifespan of up to 50,000 hours, and will run for up to 28 hours in low-light mode from a single battery - a highly efficient current contorl circuit allows stable brightness at every battery level. The NiteCore T-Series T5s Key Chain Light is activated by a rotory control switch built into the head of the light, allowing one-handed operation. You can clip the NiteCore T5s to a pocket with the included clip, or keep it on your keyring with the integral end loop. Super-compact, the ultra-tiny Nitecore T5s Keyring Light fits almost anywhere!