Diving Masks Foldable Anti-Fog Snorkel Mask Set with Full Dry Top System for Free Swim Professional Snorkeling Gear Adults Kids Cross it can also automatically switch

it can also automatically switch from day mode to night mode

it allows you to enjoy snorkeling

so that the mobile APP can view past pictures at any time

It can keep monitoring indoor temperature around the camera

Diving Masks Foldable Anti-Fog Snorkel Mask Set with Full Dry Top System for Free Swim Professional Snorkeling Gear Adults Kids Cross it can also automatically switchSPECIFICATIONS Brand Name: NoEnName_Null Choice: yes Hign concerned Chemical: None Origin: Mainland China How to choose the size? Firstly, Measure the distance between the sides of your cheeks . If the length is 12. 5cm(4. 9 inches) , it's suitable for size S M. If the length is12. 5cm(4. 9 inches),it's suitable for size L XL. Description: 1. Safety Airflow System: The upgraded snorkeling mask features a fully dry snorkeling system, which reduces the