The Olympus T20 Flash is specifically designed for Olympus OM 35mm cameras such as OM-1, OM-1n, OM-2, OM-2n, OM10, and OM20. This shoe mount flash unit features Xenon light type with TTL functionality, making it compatible with digital cameras. With an active interface shoe and hot shoe mount interface, the Olympus T20 flash provides reliable and high-quality lighting for your photography needs. Ideal for Olympus camera users looking for a reliable and efficient external flash accessory.