Thank you for viewing! This is a compact flash unit compatible with TTL, auto metering, and manual mode. Its compact size and sophisticated design make it a perfect match for the Leica M! - Brand: Leica - Model: SF 20 - Features: TTL, Manual Mode, ISO Setting - Battery Type: CR123A x2 - Included Accessories: Wide Panel Operation: Confirmed. Appearance: There are some minor scuffs, but it is in beautiful condition as shown in the photos. If you have any questions, please feel free to comment. Thank you for your consideration.