diff --git a/pyproject.toml b/pyproject.toml
index e26d86e..00836d0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@ cache-keys = [
 [tool.scikit-build]
 wheel.expand-macos-universal-tags = true
 minimum-version = "build-system.requires"
-build-dir = "build/"
+build-dir = "build/{wheel_tag}"
 
 
 [tool.pytest.ini_options]
diff --git a/src/core/bindings.cpp b/src/core/bindings.cpp
index 5f685c6..2886e56 100644
--- a/src/core/bindings.cpp
+++ b/src/core/bindings.cpp
@@ -39,12 +39,14 @@ PYBIND11_MODULE(_num, m) {
 
 PYBIND11_MODULE(_gather, m) {
   py::class_<Gather>(m, "Gather")
-      .def(py::init<int, int, int, double>())
+      // .def(py::init<int, int, int, double>())
+      .def(py::init<int, int, int, double>(), py::arg("id"), py::arg("nt"),
+           py::arg("nx"), py::arg("dt"))
       .def_readwrite("id", &Gather::id)
-      .def_readwrite("dt", &Gather::dt)
       .def_readwrite("nt", &Gather::nt)
       .def_readwrite("nx", &Gather::nx)
+      .def_readwrite("dt", &Gather::dt)
       .def_readonly("data", &Gather::data)
-      .def("__str__", &Gather::display)
+      .def("__str__", &Gather::str)
       .def("from_bin_file", &Gather::from_bin_file);
 }
diff --git a/src/core/gather/gather.hpp b/src/core/gather/gather.hpp
index 6c179f0..52fb0d7 100644
--- a/src/core/gather/gather.hpp
+++ b/src/core/gather/gather.hpp
@@ -12,19 +12,45 @@
 
 class Gather {
 public:
-  int id;
-  int nt;
-  int nx;
-  double dt;
+  int id{};
+  int nt{};
+  int nx{};
+  double dt{};
   std::vector<double> data;
 
+  Gather() = default;
+
   Gather(const int id, const int nt, const int nx, const double dt)
-      : id(id), nt(nt), nx(nx), dt(dt), data() {}
+      : id{id}, nt{nt}, nx{nx}, dt{dt} {
+    data.resize(nt * nx);
+  }
 
-  [[nodiscard]] std::string display() const {
+  /**
+   * @brief a helper function used for Python __str__ method.
+   */
+  [[nodiscard]] std::string str() const {
     return "Gather id: " + std::to_string(id);
   }
 
+  /**
+   * @brief overload the output stream operator for Gather.
+   */
+  friend std::ostream &operator<<(std::ostream &os, const Gather &gather) {
+    os << "Gather id: " << gather.id << std::endl;
+    return os;
+  }
+
+  /**
+   * @brief Read a binary file and create a Gather object.
+   *
+   * This function takes a file path (string), the number of time samples (nt),
+   * and the number of traces (nx) to read from the binary file.
+   *
+   * @param path the path to the binary file.
+   * @param nt the number of time samples per trace.
+   * @param nx the number of traces per gather.
+   * @return Gather object populated with data from the file.
+   */
   static Gather from_bin_file(const std::string &path, int nt, int nx,
                               double dt = 0.0) {
     std::ifstream file(path, std::ios::binary);
diff --git a/src/libseis/_gather.pyi b/src/libseis/_gather.pyi
index 839be4c..972f1eb 100644
--- a/src/libseis/_gather.pyi
+++ b/src/libseis/_gather.pyi
@@ -11,7 +11,9 @@ class Gather:
     dt: float
     data: list[float]
 
-    def __init__(self, id: int = 0, nt: int = 0, nx: int = 0) -> Self: ...
+    def __init__(
+        self, id: int = 0, nt: int = 0, nx: int = 0, dt: float = 0
+    ) -> Self: ...
     @staticmethod
     def from_bin_file(
         filename: str,
diff --git a/tests/fixtures/testTrace.bin b/tests/fixtures/testTrace.bin
new file mode 100644
index 0000000..a5bbb2c
Binary files /dev/null and b/tests/fixtures/testTrace.bin differ
diff --git a/tests/libseis/test_gather.py b/tests/libseis/test_gather.py
index 0684690..b994cac 100644
--- a/tests/libseis/test_gather.py
+++ b/tests/libseis/test_gather.py
@@ -9,7 +9,7 @@ class TestSeismicGather:
     @pytest.fixture
     def gather(self):
         """Fixture to create a Gather instance."""
-        return Gather()
+        return Gather(id=1, nt=2, nx=3, dt=4.0)
 
     def test_gather_init(self, gather):
         """Test the Gather class base constructor."""