The Elinchrom ONE is a compact, 131Ws off-camera flash built for photographers who want studio-style light shaping without carrying a full studio kit, weighing just 3.3 lbs and sized similarly to a 70-200mm lens. An internal Li-ion battery delivers up to 725 full-power flashes per charge and can be topped up from any USB-C source, with Active Charging keeping the flash usable even while it's plugged in and charging. 131Ws output in a 3.3 lb (1.5kg) body: Sized similarly to a 70-200mm lens for a compact, travel-friendly off-camera flash. Internal Li-ion battery, up to 725 full-power flashes per charge: Delivers enough capacity for longer shoots without swapping batteries. USB-C Active Charging: Charges from any USB-C source and keeps shooting uninterrupted even while charging, regardless of battery level. TTL and HSS support: Automates exposure and allows flash sync at higher shutter speeds. Streamlined touch interface: Keeps on-flash controls simple in a low-profile housing.