Ultra-compact and lightweight: only 66 g Easy to carry and wear: Self-adjusting retractable cord can be worn on the head, the wrist or attached to a tent pole, a bike frame... Easy to use: Three white lighting levels: proximity, movement and distance red lighting preserves night vision and prevents members of a group from blinding each other Single button for quick and easy selection of brightness or light color HYBRID CONCEPT design: ZIPKA comes with three standard batteries and is also compatible with the CORE rechargeable battery. phosphorescent reflector is useful for locating the lamp in the dark