1. Tipe penet tombol, desain tombol multi-baris
2. Dobel-lapisan tekanan padharan, gampang kanggo reshape awak apik
3. Memori meksa balung nom meksa balung rawan, bantuan retraction weteng
4. Ora mbalek pinggiran kanggo nyegah ngusapake
5. Pas lekuk awak nyaman ora pinggiran frayed ora ana tandha