The Clever Dripper S is the smaller member of the Clever family, built for single-serve brewing in the 150 to 300 ml range. Same valve, same hybrid philosophy as the L — only scaled down so you do not have to brew more coffee than you are going to drink. It takes a #2 paper filter, the same Melitta-style basket cone as the L, just smaller.
At this size steep time shortens slightly because the coffee-to-water contact is more intense in a narrower vessel. A starting recipe: 12 g of coffee, 200 g of water (1:16), medium grind, water at 94 °C, stir once, steep for 2:00 to 2:30, then release. The plastic body cools faster than the L, so pre-heat it with a rinse of hot water — ideally the same rinse you use to wet the paper filter.
The Clever S is hard to beat for travel, offices, and minimalist home setups. It gives you a repeatable, forgiving cup with almost no technique barrier, and the cleanup is fast enough that it fits into a rushed morning.