There were several differences between Eagle and Apollo 10's LM-4 Snoopy; Eagle had a VHF radio antenna to facilitate communication with the astronauts during their EVA on the lunar surface; a lighter ascent engine; more thermal protection on the landing gear; and a package of scientific experiments known as the Early Apollo Scientific Experiments Package (EASEP).
ðɛɹwˌɜː sˈɛvɹəl dˈɪfɹənsᵻz bᵻtwˌiːn ˈiːɡəl ænd ɐpˈɑːloʊ tˈɛn ˌɛlˈɛm fˈoːɹ snˈuːpi; ˈiːɡəl hæd ɐ vˌiːˌeɪtʃˈɛf ɹˈeɪdɪˌoʊ æntˈɛnə tə fəsˈɪlᵻtˌeɪt kəmjˌuːnɪkˈeɪʃən wɪððɪ ˈæstɹənˌɔːts dˈʊɹɹɪŋ ðɛɹ ˈiːvə ɔnðə lˈuːnɚ sˈɜːfɪs; ɐ lˈaɪɾɚɹ ɐsˈɛnt ˈɛndʒɪn; mˈoːɹ θˈɜːməl pɹətˈɛkʃən ɔnðə lˈændɪŋ ɡˈɪɹ; ænd ɐ pˈækɪdʒ ʌv saɪəntˈɪfɪk ɛkspˈɛɹɪmənts nˈoʊn æz ðɪ ˈɜːli ɐpˈɑːloʊ saɪəntˈɪfɪk ɛkspˈɛɹɪmənts pˈækɪdʒ ˈiːzɛp.