Test the Series for Convergence or Divergence $\sum _ { n = 1 } ^ { \infty } \sin \left( \frac { 1 } { n ^ { 4 } } \right)$

Test the series for convergence or divergence. $\sum _ { n = 1 } ^ { \infty } \sin \left( \frac { 1 } { n ^ { 4 } } \right)$