This item has been replaced by the HM23 V2. The Fenix HM23 running and hiking headlamp is incredibly lightweight and compact, tipping the scales at 1.52 ounces, yet remaining strong and robust. With the HM23, one single AA Battery supplies long-lasting power, and the innovative all-in-one single-switch operation allows for easy activation. The included headband has reflective strips visible up to 164 feet away, and the beam angle is adjustable from 0-180Adeg for suitable caving and hiking visibility. Boasting IP68 waterproof protection, the HM23 will stand up to any challenge the trail brings. It&';s the perfect companion for any journey.