Find HS Code and trade information for diving mask

Diving Mask

A diving mask is a framed optical device used to enable underwater vision. It allows a diver to clearly see while submerged by creating an air space in front of the eyes, compensating for the refractive index of water.

Material

• Skirt: Typically made of silicone or neoprene. Silicone is favored for its comfort, durability, and ability to form a better seal. Neoprene is less expensive but can be less comfortable and requires more maintenance.
• Lens: Tempered glass is standard due to its safety; it shatters into small, relatively harmless pieces rather than sharp shards. Polycarbonate lenses are also used, offering impact resistance but being more prone to scratching.
• Frame: Constructed from plastic, rubber, or a combination of materials. The frame holds the lens and provides attachment points for the strap.
• Strap: Usually made of silicone or rubber, with adjustable buckles for a secure fit.

Purpose

The primary purpose of a diving mask is to correct for the distortion caused by light refraction when viewing objects underwater. The human eye cannot focus effectively underwater without assistance, resulting in blurry vision. A mask creates an air pocket, allowing the eye to focus normally.

Function

• Air Space Creation: The mask forms a watertight seal around the eyes and nose, creating an air pocket.
• Refraction Correction: The air pocket compensates for the difference in refractive indices between air and water.
• Equalization: Divers can equalize the pressure within the mask by gently blowing air into it via the nose pocket, preventing discomfort and potential damage to the ears.
• Field of View: Mask design impacts the diver's peripheral vision. Lower volume masks generally offer a wider field of view.

Usage Scenarios

• Scuba Diving: Essential equipment for all scuba divers.
• Snorkeling: Allows clear underwater vision for surface snorkeling.
• Freediving: Used to improve underwater visibility and reduce drag.
• Spearfishing: Provides clear vision for targeting fish.
• Pool Swimming/Training: Used for underwater observation and training exercises.

Common Types

• Single-Lens Masks: Feature a single, large lens providing a wide field of view. Often preferred by freedivers.
• Dual-Lens Masks: The most common type, offering a balanced field of view and comfortable fit.
• Panoramic Masks: Feature multiple lenses for an extremely wide field of view, but can be bulky.
• Low-Volume Masks: Designed with a smaller internal volume, reducing drag and equalization effort.
• Full-Face Masks: Cover the entire face, incorporating a snorkel and often a communication system.
• Corrective Lenses: Masks can accommodate prescription lenses for divers with vision impairments.
• Dive Computer Integrated Masks: Some masks have a built-in display for dive computer information.

Diving masks are breathing appliances designed for underwater use. They are carried on the person and do not require attendants.

The following HS codes are relevant:

• 9020004000: This code covers “Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters; parts and accessories thereof: Underwater breathing devices designed as a complete unit to be carried on the person and not requiring attendants”.

  • 90: Chapter 90 – Instruments and apparatus which measure, check or control, or their parts; optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof.
  • 20: Heading 20 – Breathing appliances and gas masks.
  • 004000: Subheading 004000 – Underwater breathing devices designed as a complete unit to be carried on the person and not requiring attendants. The basic tariff is 0.0%, with a supplementary tariff of 0.0%. After April 2, 2025, a supplementary tariff of 30.0% will be applied, resulting in a total tariff of 30.0%.

• 9020006000: This code covers “Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters; parts and accessories thereof: Other breathing appliances and gas masks”.

  • 90: Chapter 90 – Instruments and apparatus which measure, check or control, or their parts; optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof.
  • 20: Heading 20 – Breathing appliances and gas masks.
  • 006000: Subheading 006000 – Other breathing appliances and gas masks. The basic tariff is 2.5%, with a supplementary tariff of 0.0%. After April 2, 2025, a supplementary tariff of 30.0% will be applied, resulting in a total tariff of 32.5%.