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Feature

Lights turn on when they come in contact with water and turn off when they are dry.
Flashing mode only.
Ideal for dawn, dusk and night dives - make divers easy to spot under water and are reusable unlike glow sticks
Helps you keep track of your buddy under water
Batteries are non-replaceable. Light lasts 500 hours under water.

Description

These disposable water activated marker lights turn on when they come in contact with water and turn off when they are dried off. Total life is 500 hours which far exceeds most marker lights on the market.