Meiosis I results in two cells, each containing half the number of chromosomes of the original cell. Specifically, the end product of meiosis I is two haploid daughter cells, each with a complete set of chromosomes that consist of sister chromatids.
During meiosis I, the homologous chromosomes are separated. This means that each daughter cell receives one chromosome from each pair of homologous chromosomes. As a result, the chromosome number is halved, which is a key feature of meiosis compared to mitosis which produces two diploid daughter cells.
In summary, after the first meiotic division, you end up with two haploid cells, setting the stage for meiosis II, where further separation of sister chromatids occurs.