**Product Specifications:**
**Brand:** Blutech
**Model:** 1807
**Frame Material:** Titanium Alloy
**Blue Light Protection Index:** 95% (385nm ≤ λ ≤ 415nm)
**UV Protection Index:** 99.9%
**Applicable Users:** Professionals/Gamers/Leisure
**Light Transmission:** 90%
**Frame Width:** 140mm
**Bridge Width:** 17mm
**Lens Height:** 46mm
**Lens Width:** 54mm
**Temple Length:** 140mm
**Frame Shape:** Diamond
(Note: The data regarding the effects of wearing Blutech lenses before sleep, melatonin secretion levels, and the study mentioned are sourced from the 2017 AAopt journal article "Blue Light-Blocking Glasses May Help, Study Suggests" and have been indexed by the American Medical Search Engine. Results may vary depending on individual usage.)
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