The Leica DB R4 databack replaces the standard camera back door, and provides the option to manually expose the date, time, and the letters A to K into the bottom right-hand corner of the picture together with the exposure.
| Hard Disk Space | 2x MS 76 (SR44/EPX76) 1.5v Silver Battery |
| Dimensions | 5.4 x 2.1 x 1.2" (137 x 54 x 30mm) |
| Weight (Approx.) | 7.2 oz (205 g) |