Where is this manufactured?

This is a Proctor and Gamble product. The corporate office for P&G is US based, located in Cincinnati, OH. But I do not know where the specific factories are located.

Is this an original crest product? i can't seem to find the same "levels 34 whiter" on the crest website and anywhere else, except for amazon.

This a crest product, probably just an older marketing gimmick.

Does your light stay on for 5 minutes? Mine only stays on for 2 minutes then only seconds if I try to turn it on again.

Yes, mine stays on for 5 minutes.

At the top of this page it say the product "uses the same whitening ingredient dentists use". What type of peroxide is it, & in what concentration?

I have no idea, but I can tell you these strips really work!

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Description

💎 Light up your smile, own every room.

EFFORTLESS SAFE - Gentle on enamel yet powerful on stains, delivering professional results from the comfort of home.
CLINICALLY TRUSTED - #1 dentist recommended whitening brand using professional-grade ingredients that protect enamel.
STAY PUT TECHNOLOGY - Advanced Seal Technology ensures strips stay firmly in place—talk, sip water, and multitask hands-free.
PRO LEVEL BRIGHTNESS - Achieve up to 34 shades whiter with the highest hydrogen peroxide formula for a radiant smile that stands out.
COMPLETE WHITENING EXPERIENCE - Includes 20 treatments plus an LED light to boost results faster, perfect for your big day or daily confidence.

Crest 3D Whitestrips Professional Effects + LED Light kit offers 20 treatments with upper and lower strips, enhanced by an LED accelerator light. It delivers professional-level whitening with the highest hydrogen peroxide concentration Crest offers, is enamel-safe, and features no-slip grip technology for a convenient, dentist-recommended at-home whitening experience.