A blue power indicator light inside the metal tail switch flashes to indicate the remaining battery voltage.

The integrated advance temperature regulation (ATR) technology regulates the output of the TM20K according to the working condition and ambient environment to maintain the optimal performance. Enhancing its portability, the Wuben A1 incorporates a thoughtfully designed handle for effortless carrying.As the name might suggest, Nitecore's line of Tiny Monster flashlights are designed to pack maximum punch into compact packages, and the latest cranks up the illumination to a blinding 20,000 lumens. Nick has been writing and editing at New Atlas for over six years, where he has covered everything from distant space probes to self-driving cars to oddball animal science. Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item.

The batteries cannot be removed and are charged up inside the torch via the USB-C port on the tail of the torch.

The Nitecore TM20K Turbo Ready is a ultra high performance tactical torch, with an astonishing maximum output of 20,000 lumens in turbo mode using 19 x Cree XP L2 HD LEDs, which is absolutely amazing considering its size. The indicator will also show battery power when the torch is turned on with a solid light for above 50%, a slow flashing light for 10-50% or a rapid flashing light for below 10%, at which point charging is advised asap. No run-time figures are listed for Turbo mode, but the battery keeps the lights on for 45 minutes in High Mode and 1 hour 45 minutes in 1,900-lumen "Mid" mode, so make of that what you will.

Overall a nice light, very bright, easy to use with several shortcomings that can be overlooked to make this an occasional use EDC but not quite a permanent fixture in my EDC.For items purchased from third-party platforms within 30 days, we recommend you contact the original seller first, so they may take care of you. Rated for 290mts beam distance and 45min on High, 1hrs 45min on Mid, 4hrs 15min on Low, 13hrs on ultra low.

It is powered by built-in rechargeable 21700 Li-ion batteries that charge via a USB-C port on the tail of the light, and is compatible with Quick Charge (QC) adapters for fast charging.

If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag. NITECORE is an innovative manufacturer of LED flashlights, headlamps, batteries, chargers, and other accessories. Different from other LED flashlights, it uses 21700 rechargeable lithium batteries with 20000 lumens and 32000 mAh capacity, which can not only provide high-brightness lighting for the dark night, but also provide 3 hours of battery life. Note that there are restrictions on some products, and some products cannot be shipped to UK destinations. Whether you're setting the mood at your campsite, adding a dash of sophistication to your outdoor endeavors, or signaling for help in emergencies, the Breathing Light feature makes the Wuben A1 a true standout in the world of flashlights.