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![EDGE™ SOLO ESR40 Pack [K83120AKI000-K]](https://cdn.shopify.com/s/files/1/1461/0740/products/EdgeReader-ER40-82120_681c4784-e5be-463a-ad4e-f590d6e34ac4.png?v=1485182432 "EDGE™ SOLO ESR40 Pack [K83120AKI000-K]")
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Description
071405 Fingerprint Recognition Module - Black + GreenBrand N Model : Quantity : Form Color Black Material : English Manual Spec Yes Packing List 1 x Fingerprint module 1 x Connecting cable (15cm)
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![VertX™ V300 Controller [70300xEB0N]](https://cdn.shopify.com/s/files/1/1461/0740/products/v300_eb047741-5f6b-421f-b7cb-5d4ba2f535a6.png?v=1485182402 "VertX™ V300 Controller [70300xEB0N]")
4.1 ★★★★★
Based on 236 reviews
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Product Reviews
★★★★★ 3
It was ok
Size: 2 Fl Oz (Pack of 1)
It tastes better than all the alternatives I’ve tried, but it makes me wonder if it is more sugar and less potency because I didn’t feel a noticeable difference after taking it like I had with some other brands. It also is a much fainter blue than the others I’ve taken…like it is possibly less concentrated(?) Anyhow, I could tolerate the flavor right out of the dropper unlike any others I’ve tried, but I’ll probably try a new brand next time as this wasn’t my favorite.
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Reviewed in the United States on August 14, 2025
★★★★★ 5
Great so far
Size: 2 Fl Oz (Pack of 1)
I started using this product about a week ago. I take it first thing in the morning on an empty stomach. So far and in the short amount of time I can tell that I'm having more constant energy that I had in awhile. Still to early to speak about other changes but I'm sure I will see more as the time goes. Definetly worth the buy.
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Reviewed in the United States on July 26, 2025
★★★★★ 5
Wow!
Size: 2 Fl Oz (Pack of 1), Size: 2 Fl Oz (Pack of 1)
I only started with a half dose and I can definitely feel the mental clarity. I feel hyper focused. My energy level did not necessarily change yet, but my focus definitely did. As I work my way up to a full dose I’m sure the energy levels will change. I went straight water with it and did not notice any kind of taste. The dropper is marked with dosage so the ease-of-use is great.
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Reviewed in the United States on July 9, 2025
★★★★★ 2
Leaky packaging
Size: 2 Fl Oz (Pack of 1)
Bottle leaked everywhere in package, smelled like cleaning solution.
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Reviewed in the United States on December 17, 2025
★★★★★ 5
Gives a nice lift.
Size: 2 Fl Oz (Pack of 1)
Pleasant blueberry taste. As some other reviews have noted, it’s not the strongest Methylene Blue, but it does give me a gentle energylift in about 15 minutes.
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Reviewed in the United States on August 25, 2025
