If its under warranty, bring back to shop or better still directly bring back to the Service Center.
Clicking noise means one of the springs dislocated usually. Have to get it fixed fast, and in the meantime don't wear it anymore.
The more you wear it, the worse the damage.
BALL
Ball Watch Malaysia Sdn Bhd
Unit 30.3, Level 30, Menara Standard Chartered,
No. 30, Jalan Sultan Ismail, 50250 Kuala Lumpur,
Malaysia
Tel:+60-3-2142-0887