Subscribe to my channel
1. D-ONE Training Course
2. Neck Ring Assembly – Replace O-Ring and Neoprene Collar
3. Replace Neck Pad
4. Replace and Check Swing-Arm System
5. Helmet Shell Check
6. Comms Check
7. Helmet Lining Cleaning
8. Post Dive Cleaning and Sanitizing
9. Exhaust & Water Dump Systems Check
10. Side Block Check
11. Setting the Demand Regulator
12. DRASS Company Presentation