Philips SmartClean dry/wet shaver

For sale, Philips SmartClean dry/wet shaver. The shaver has been used a maximum of 4 times and has been sitting unused in the cupboard for a long time. We will give it away for cheap. The shaver is designed to clean itself, requiring a special liquid. We tried to test this function at home, but it didn't work with water. Possibly because the appropriate liquid was missing, or this option no longer works. The shaver itself is in perfect working condition.