Code for repeater acf
<?php
// check if the repeater field has rows of data
if( have_rows('product_features') ):
echo '<h5>'.SPECS.'</h5>';
echo '<ul class="features">';
// loop through the rows of data
while ( have_rows('product_features') ) : the_row();
echo "<li>";
// display a sub field value
echo the_sub_field('product_feature');
echo "</li>";
endwhile;
echo "</ul>";
else :
// no rows found
endif;
?>