There are many things to like about this light. However, I found much conflicting information about this product vs the description; some good, some bad. It looks and feels like a solid product. It is a pretty bright light as others have commented, but 1000 lumens, I hardly think so. I wouldn't be able to tell you, but it is plenty bright for most user needs. If your considering any light, don't get hung up on the vendor's claims to lumens, these could very well just be advertising ploys to attract the average potential consumer. The description states that the product incorporates both a flood and spot LED. Not so, with this light; the light output, distribution, and color on each LED are exactly the same, as well as the physical appearance of each LED and their respective light concentrators. However, I will say that I really do like the light distribution that this product has to deliver, as the majority of the light output is central with a decent amount of flood. I found it a good balance for my liking. The manufacture, whomever that may be, did a good job with their multifunction button for sure. One click for both on and off, sequential double click for strobe/ SOS/ pulse. and press and hold to cycle through the intensity of brightness. The single on/ off/ multifunction button is an excellent choice for those who have intentions of using this light with gloved hands. It is large enough and easy to access, making this more of an ideal choice than other lights with smaller buttons. Additionally, I am quite pleased to see that their lowest illumination setting is not blinding for up close work. To be clear, I purchased what seems to be the 2nd generation of this headlamp. Indicated on the silicone board (behind the lens cover) as VER: 02. The Amazon description of this product indicates having dual CREE XP-G2 LEDs, the product instruction manual states that it has the CREE XP-G3 LEDs. So which is it? What average consumer would know or could tell, when in reality these things are mass manufactured overseas, shipped out to their distributors and branded with distributor's logo on them. In reality, there are so many of these identical products with different brandings on Amazon with slight variations, it would be impossible to determine by the average consumer, therefore, these vendors can claim whatever they like about their products, but that doesn't necessarily translate to the truth. The products description indicates the headlight is charged with a micro USB connector, but the product arrived with a USB-C type. Very nice, but I am highly doubtful that the technology in this light supports the potential charging speed typically supported by a USB-C, and confirmed by the amount of time required to fully charge this battery. Regardless, the USB-C is by far a more reliable connection with respect to longevity of the connection. The generic flat top 18650 battery arrived and charged at 3.78V, and everything functioned as expected when the battery was inserted. The clear lens cover appears to be made out of glass. The Amazon description states that it is made from tempered glass, but per another Amazon customer's review, his light was dropped and the glass cracked and did not shatter as tempered glass is prone to do. Note, tempered glass is tough, and typically shouldn't crack when dropped; however, there are many variables to consider relative to any situation where the lens breaks. Also considering that the glass lens is completely encompassed by plastic and not metal, raises my suspicions that this is not tempered glass as advertised. This vendor's headlight claims to support a IPX8 rating per the products description. I might agree that this light would be worthy of an IPX8 waterproof rating if the light incorporated a gasket between the front cover that houses the lens (plastic, not aluminum), and the aluminum case that this cover approximates against. There appears to be a groove in the plastic piece that could potentially accommodate a gasket, but this product fell short on delivering such. Another way you can quickly ascertain to determine how waterproof or resistant a flashlight might be that utilizes a cap (as opposed to a hatch), is as simple as removing the cap and battery, seal your lips around the opening, and blow into it. If your hearing any air escaping, it is most likely not very water resistant. This headlight allowed a lot of air to quickly escape denouncing SLONIK's claim to a reported IPX8 rating. For those who are interested in what exactly an IPX8 rating is means, is that an item described to have and IPX8 rating should tolerate being submerged in water deeper than 1 meter (about 3 feet), for longer than 30 minutes. The "X" following the "IP" just means the rating has not been validated. IP68, means that it has passed such validation. Trust me when I say, there is no way that this product is even close to their claims of a IPX8 rating. If I were to give this a fair and accurate IPX rating, I would most likely give it an IPX4 at best (resistant to light splashes of water at any angle). If water resistance is of no importance to you, disregard. Upon inspection of the silicone board, the visible solder joints look poorly executed and are not very consistent. If this is a testament of the build quality to stand the test of time, I am not so sure that it will, and one should really reconsider their purchase of this product if absolute reliability is at stake. The battery life seems to be quite impressive, well at least on the lowest setting. I'm calling it quits after 12 hours of continuous run time. After the battery was fully charged, and the 12 hour (lowest illumination setting) test was complete, the battery's voltage on a quality multimeter reported 3.73V. Not bad at all! I can see where this light would be extremely useful to the trades of a plumber or electrician requiring significant light, but not blinding light for a substantial period of time.I am pretty sure that the branding distributer/ vendor (SLONIK) is betting that most customers will not thoroughly disassemble and perform a manual inspections of their products being sold right out of the package. Additionally, they are most likely pricing these lights at a good balance as to when something does fail on the light, rendering it inoperable, it will be too cumbersome or not worth the consumer's time to pursue the seller's claim on the warranty process, thus advertising higher claims on their products, but delivering a lot less for the purposes of enhancing the sell of their product.Please do not get me wrong, I really like this light. However, I am requiring a light that has good battery life (in which it has demonstrated), a significant amount of water resistance, and a decent build quality at an affordable price. I am sad to say that much of the vendor's claims about their product fell short on my requirements and/or expectations. Due to the mismatch in the description of the light and my findings, I will be returning the light and seeking another brand, but not of this similar light that is only rebranded by a different vendor.so I have a thing For headlights Ive had a ton of them and this one is by far the best and my most favorite one its super durable and used 18650 rechargeable batteries which is awesome cause i have a charger and spare 18650 batteries cuz i vape so when the battery dies I just put it on the charger and pop in a fresh one none of that waiting for it to be charged crap, but you can also charge it with a micro usb cord and the plug for the cord is covered up by twisting the power button which is really cool cause you don't have to worry about dirt or debris getting in the plug. It is also really bright and has a dimmer and strobe light you just long press the power button to dim it and it has like 6 dim settings and you can also pop it out of the headset and use it as a hand held flashlight and it swivels up and down so if you need you can point it up or down its not just stuck in one solitary position and it also comes with clips so you can clip it onto a hardhat my only complaint is with the part were it sits on your forehead should have some kind of padding cause it really starts to hurt after wearing it for awhile i just cut up a rag and put some padded tape over it to cushion it some and that's helped with that problem but it should come with something but thats really my only complaint other then that its a great headlight and i highly recommend it.First Misleading Reviews - unfortunately well intentioned reviewers misinterpret technical spec documents and make mistakes that tear apart good products like this one. This is in response to Kimberly's Review of the specs included with the SLONIK S25 model 1,000 Lumen, dual LED Headlamp, and the product itself & the packaging, accessories , etc.. First I can understand and even empathize with her frustration as to why more electronics aren't made in USA and the relatively lower cost of products made in Asia, some of those products/companies are not reliable & I too have found incorrect or exaggerated specs. BUT in this case - I found SLONIK to be Extremely reliable, customer service oriented, products r very well made, excellent craftsmanship, name brand parts & reliable operation - their instructions are EXCELLENT, clear & concise including warranty information, specs & contact info. Top 10% IMHO as compared to similar electronics I purchased on Amazon in past 10 years. That said - the "False Advertising Claim" you made re: the pair of CREE X-Lamp model XP-G2 LEDs (Proudly stated, BTW, that the LEDs are Made in America!! - SLONIK's primary selling point!).. The Flux output you refer too on Cree's website (pages 6-14) is clearly stated as the "Minimum Luminous Flux @ 85 C & (more importantly!!) @ 350 mA". - If you go to page 17, you'll find a Table - "Relative Flux vs Current" (@ 85 C) for both the Standard and High Efficacy versions of this same LED - the Standard version can handle up to 1500 mAh batteries, the Hi-Efficacy up to 2000 mAh. At 350 mAh - we see it intersects @ 100% - just like you said - if battery was a 3.7V @ 350mAh then Flux (lumens) would be 100% x 164 lm = 164 lumens per LED x 2= 328 lm output from both LEDs. BUT we have a 2200mAh battery - look at the graph - @ 1000mAh it is 250% x164 = 410 each LED (820 lm total) @ 1500 mAh (max for standard Cree XPG-2) = 340% x 164 = 557 lm x 2 LEDs = 1114 lm Total - MORE than Spec claims and well within 2200mah/3.7V battery rating - spec claims that at this level (assuming it is the 100% mode) - you'll get 4 hours before recharge (battery dissipates 8.14 watts/hour, or max of 2.2 hours running full load, @ 1500mah/3.7V load - battery will dissipate 5.55 Watts/hr. My quick math in my head says we should get around 3.5 hours of battery at 100% brightness setting, spec says "4 hours" at 100% running at 10 watts (each LED is rated at max 5V/1A or 5 Watts x 2 = 10 Watts). Anyway - according to Slonik's spec and Cree's Data Sheet for the LED & battery capacity chart (assuming all is perfect - NEVER IS) the Lumens STATED in SLONIK's Spec = 1000 lm for 2 x CREE XPG-2 Standard Version is CORRECT as math and Specs say output @ 1500mah = 1114 lm - Close enough - Color Temp - Depends which model CREE they used - I would guess in Daylight/Cool White range where LED has higher Flux in that 4200-8000 Kelvin range rather than warm white below 4000 Kelvin range.In closing - after about 6 weeks using this light almost everyday with my head and light stuck in 9.5" ceiling holes cut for 4 new Dolby Atmos speakers and new 6" smart Recessed lights (x 8). The storage case, instructions and battery are IMO high end for any price-range, charge cable and integrated mini-USB port - is flimsy - not because SLONIK is bad - that mini USB is awful in general it is unreliable and should be discontinued on any equipment (cell phones included) - it's garbage and a bad idea - if u r careful with it it's fine - get a higher quality cable - I have a spare external 18650 floor charger - I use it for my LED flashlights - BTW flat top battery that SLONIK uses has no connection troubles in my external charge (no electrical contact issues because of small positive nipple on the battery - nipple is fine just like it is). I typically set headlamp on lowest or 2nd lowest setting for my purposes - electronics repair, construction projects, outdoor dark night activities - sneaking around at night & BBQ-ing in the dark. Have not found a practical use for "Full Power" Yet - but man is it bright - and the combo "Spot" & "Flood" HQ lenses are excellent. Charges fully in less than 90 minutes - my only minor complaint is it does get warm if u wear it directly on exposed skin - like my skull/forehead - need to turn it off between "jobs".Band is very soft & comfortable, easy to adjust.In summary, the negative review re: Lumen Output was a simple MISUNDERSTANDING of how CREE's LED Flux output is calculated - & I think some folks paid lots of $$$$ for other "BRANDS" that are same as this & R looking for a "Flaw" in this product that just isn't there.