const Person = sequelize.define('model', {
  name: {
	type: Sequelize.STRING
  },
  gender: {
    type:   Sequelize.ENUM,
    values: ['Male', 'Female', 'Others']
  },
  bloodGroup: {
    type:   Sequelize.ENUM('A', 'B', 'AB', 'O')
  }
});

console.log(Person.rawAttributes.gender.values);
// log output => ['Male', 'Female', 'Others']
console.log(Person.rawAttributes.bloodGroup.values);
// log output => ['A', 'B', 'AB', 'O']