Blue light is part of the visible light spectrum, close to blue in color, with wavelengths between approximately 380nm and 500nm. This light is naturally present in sunlight and also emitted by electronic device displays, fluorescent, and LED lighting. Blue light can help with alertness, reaction times, and mood elevation, but excessive exposure can affect sleep patterns and increase eye fatigue. Therefore, many people use blue light-blocking glasses when using electronic devices for extended periods.

The price includes blue light and UV protection features, prescription, and shipping.

We do not offer multifocal lenses.

The size of the glasses frame is available on each product page.

Delivery is dispatched via EMS flight the day after registration, and varies by country.

You can track it on the Korea Post website. In other cases, please contact our website for inquiries.

http://www.emspremium.com/tracking/

Please contact us for an assistance.

Please send returns and exchanges to the following address:

755, Buil-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do Republic of Korea 14670

*Return shipping costs are the responsibility of the customer.

Unfortunately, we are not offering exchanges at the moment. Please contact the customer service to request a return, and place a new order.

Please send returns and exchanges to the following address:

755, Buil-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do Republic of Korea 14670

*Return shipping costs are the responsibility of the customer.