Great light will always be with you. Sync, TTL, HSS, remote control (Air 1 and Air 2). 10 stop levels (0, 1-100 Ws). Compatible with Universal. Compatible with Profoto AirX. Compatible with all A-series batteries. One battery charge allows for up to 400 flashes at full power (100 W). Meet the Profoto A2: the battery-powered compact flash designed for life on the go and compatible with any camera. Despite being the size of a soda can, the A2 delivers up to 400 flashes at full power and 100 W – all on a single battery charge. It features a flash recycling time of 0.05-1.3 seconds and a range of 100 m with wireless remote controls and TTL. The A2 is fully compatible with the entire Profoto system thanks to its integrated Bluetooth-based AirX technology, making it a perfect companion for natural light settings. For even more lighting possibilities, use it with the complete range of Clic light modifiers. And if you add the Clic OCF Adapter II to your gear, you'll gain access to over 120 OCF light modifiers that will expand your creative options immensely. TTL flash unit for optimal illumination. The flash unit ensures optimal lighting of your subject even in challenging lighting conditions. The TTL flash automation (Through the Lens) measures through the lens how much light is needed and adjusts the intensity of the flash accordingly. No manual adjustments are necessary; the required amount of light is automatically adapted to the specific conditions. If needed, you can also control the flash manually.