Yes, Shuttoo Sunglasses is waterproof. If you want, you can take it to shower, waterfall or scuba diving. :)
The Shuttoo Sunglasses is powered by battery. The battery last at least 3 years. We do offer free battery replacement (Buyers just need to pay for shipping)
Shuttoo Sunglasses weight only 34 g (1.1 oz) (injection) and all metal frame weight only 36 g (1.2 oz).
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