This filter is compatible with Dreametech L10s Ultra, L10s Pro, L10 Ultra, Z10 Pro, S10, S10 PRO, S10 PLUS, B101CN, 1C, W10, X10+, L10+ plus, Z10 pro, D10 PLUS, Robot Filter Vacuum Cleaner Accessories. These replacement filters are just as good as the original filters, fit perfectly and are easy to install.