Listing reads the same dimensions for L & S......can I 'assume' the 4.7" is the large size dimension?

Yes it’s the 4.7. I have an average to slightly smaller than average face/head for an adult male and it was a great fit, but could adjust either way. I would recommend large for any average adult.

do you breath in through your nose mouth or both and when you dive do you blow out through your mouth or nose?

You can breath though your nose or mouth. But aware you can't dive. Your O2 is VERY limited if you go under the water. This is a snorkel mask, not diving equipment.

What is the diameter of the round connection? please provide od and id.

The male piece on the mask has an outside dimension of 1.25". The detachable snorkel tube has an inside diameter of 1.25".

Can i wear glasses with mask?

No you cant. It would break the seal and cause leaking.

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Greatever G2 Full Face Snorkel Mask with Latest Dry Top System,Foldable 180 Degree Panoramic View Snorkeling Mask with Camera Mount,Safe Breathing,Anti-Leak&Anti-Fog

Product ID: 325740917

Details

Brand
Greatever
Color
Black
Lens Material
Polyurethane
Lens Type
Single Lens
Material
Polyurethane

🌊180° panoramic view

🎥removable camera mount

💨advanced dry top breathing system

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¥11331

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌟 See More, Breathe Better, Snorkel Smarter!

FOG FREE FUN - Dual-pane lens design creates an insulating air layer to minimize fogging, keeping your view crystal clear throughout your snorkel session.
DIVE INTO CLARITY - Experience distortion-free, ultra-wide 180° vision with premium PU resin lens for immersive underwater exploration.
CAPTURE EVERY MOMENT - Integrated removable camera mount lets you effortlessly document your aquatic adventures in stunning detail.
BREATHE EASY STAY SAFE - Innovative G2 Dry Top System with dual exhaust valves ensures smooth airflow and prevents water entry, even during sudden submersion.
COMFORT MEETS DURABILITY - Foldable design with adjustable detachable straps and a secure buckle closure offers a perfect fit for ages 9+, backed by a 1-year warranty and 24/7 customer support.

The Greatever G2 Full Face Snorkel Mask redefines snorkeling with its expansive 180° panoramic lens made from high-definition PU resin, a patented Dry Top System that prevents water ingress, and a foldable design featuring a removable camera mount. Engineered for comfort and safety, it offers anti-fog dual-pane lenses and superior airflow for effortless breathing. Perfect for snorkelers aged 9 and up, this mask combines cutting-edge technology with durable materials, backed by a 1-year warranty and responsive customer service, making it a top choice for both beginners and pros.

Specifications

ASIN	B094ZCYJ78
Age Range Description	9+ years old
Best Sellers Rank	#403 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2 in Snorkeling Packages
Brand Name	Greatever
Closure Type	Buckle
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (15,622)
Included Components	Mask
Item Type Name	snorkeling-diving-packages
Item Weight	1.74 Pounds
Lens Material	Polyurethane Resin
Lens Type	Single Lens
Manufacturer	Greatever
Manufacturer Part Number	GRESM01
Material Type	Polyurethane Resin,Silicone,Tempered Glass
Model Number	GRESM30
Strap Type	Detachable
Warranty Description	1 Year Manufacturer

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¥11331

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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