Start with the plan rather than the equipment pile. Write the site or pool, water temperature, exposure protection, entry, exit and certification level. Add the buddy or instructor and centre-supplied equipment. A mask may still need a supervised seal check. A BCD needs inflation, deflation and dump-valve checks in the planned configuration.
Use the pre-dive scuba equipment checklist for beginners as a companion. Add personal items for your day. Include prescription needs, rash guard, towel, dry clothing, water, medication, certification card and a wet-gear container. Do not assume ‘equipment included’ covers every personal item, computer, battery or size.
For a first lesson, ask the provider what should I bring to my first scuba lesson in Hong Kong. Confirm meeting time, swimwear, identification, forms, footwear, language and rental sizes. Ask whether the class supplies mask, fins, exposure protection, BCD, regulator, cylinder and weights. Ask what should stay at home.