Our full-size Russian keyboard features a dual character set in English (white letters & numbers) and Russian (red). It?s made from a one-piece fully sealed flexible silicone membrane which can be rolled for easy travel use. It has a standard QWERTY key layout and 10-key number pad that are waterproof and washable to meet IP68 / NEMA 4X standards resistant to dirt, debris and water - can easily withstand medical and industrial environments, along with repeated cleaning procedures. Fully sealed, IP68 permanent keyboard cover English and Russian characters 10-key Number pad 109 keys, including 12 function keys Windows, MAC and Linux-compatible USB / PS2 adapter included 19.25" x 5.38" x 0.5" 489 x 136.7 x 1.27 (mm) Weight: 12 oz. (0.34 kg)