Olight Arkfeld Ultra and Sphere: Three Flashlights Worth a Look This Sale Season

Introduction

Olight’s latest sale brings three lights that cover very different needs: a new flagship flat EDC flashlight, the still-relevant previous version, and a small app-controlled ambient light. Here is how the Arkfeld Ultra, Arkfeld Pro, and Sphere stack up against each other.

Olight Arkfeld Ultra

The Arkfeld Ultra is the headline release, available during Olight’s September sale with VIP access starting September 14th and general public access from September 16th through the 20th. It keeps the familiar flat wedge shape that makes the Arkfeld line so pocket-friendly, but it introduces Olight’s new O-aluminum alloy, which the company claims is roughly twice as hard as the 6061 aluminum used in the Pro, with 1.77 times the hardness, 1.46 times the yield strength of grade 2 titanium, and 1.7 times the tensile strength. Those are impressive numbers on paper, and independent stress testing will be the real proof.

Compared with the Pro, the Ultra bumps output to 1,400 lumens from 1,300, though side by side the brightness difference is barely noticeable to the eye. The body is slightly more angular, the side grip runs parallel to the light rather than at angled cuts, and the laser-perforated battery indicator is subtler than the Pro’s visible LEDs. On the scale, the Ultra came in at 120 g (4.3 oz) versus the Pro’s 112 g (3.9 oz) on the same 1,500 mAh lithium polymer battery, so the new alloy is not dramatically lighter despite the claims.

Beam and Everyday Performance

The Ultra is a three-in-one light: white light with five brightness levels plus strobe, a green laser, and a 900 mW UV light. The green laser is notably brighter than the one on the Pro, easily reaching distant trees and buildings. Battery runtimes listed are 11 days on moonlight, 61 hours for the laser, and 315 minutes for the UV light.

Outdoors, the beam is fairly widespread and roughly neutral white. This is not a thrower, and that is fine: you buy an Arkfeld for everyday carry, not long-distance reach. Turbo at 1,400 lumens lights up a large backyard area comfortably.

One interface quirk worth knowing: the Ultra swaps the usual button mapping, so double click now activates strobe and triple click activates Turbo. Every previous Olight light did the opposite, so longtime owners may need a moment to adjust. The Ultra also adds memory on the cyclable brightness levels, returning to your last setting when switched back on.

Olight Arkfeld Pro: Still a Strong Choice

If you already own the Arkfeld Pro, there is no urgent reason to upgrade. The two lights are identical in length and thickness, with only a slight weight difference. The Pro’s 1,300 lumens remain plenty for everyday tasks, and its UI will feel more familiar to Olight fans.

The Pro still includes the two-way pocket clip, magnetic charging, the same battery, and the same three-in-one feature set. For buyers who want the Arkfeld experience without paying for the new alloy, it remains a sensible pick.

Olight Sphere: Ambient Lighting With App Control

The Olight Sphere is a different kind of product entirely: a small round light with a clear outer shell that exposes more of the emitter than older bulb-style lights, which only revealed half of the light. It sits between the older bulb Pro and the much larger bulb Plus in size.

Operation is simple: a single press from the bottom button turns on white light, a tap switches to flashing red, another tap starts a color mode with gradients and effects, and holding ramps brightness up and down. Double click turns it off with a small lighting animation. It remembers your last brightness level.

The Olight app adds remote on/off, a brightness slider, a full color wheel, various lighting effects, a music rhythm mode that reacts to your microphone, a bash game, and a countdown timer. Some of those features are niche, but the core light is charming. Pricing is appealing too: it is free for Olight members at silver tier and up, or around $9.99 to $10 during the sale for non-members, down from a usual price of about $20.

Which One Should You Buy?

Go for the Arkfeld Ultra if you want the latest materials, the brightest laser in the lineup, and a slightly higher maximum output. Stick with the Arkfeld Pro if you already own one or want the same core experience with the classic button layout. Pick up the Sphere if you want a fun, inexpensive ambient light and app features, especially at the sale pricing.

Conclusion

The Arkfeld Ultra is a measured upgrade: the new O-aluminum alloy and a brighter laser are genuine changes, even if the lumen bump alone would not justify switching. The Pro remains a proven favorite, and the Sphere is an easy impulse buy at its sale price. All three launch during the September sale window, so timing your purchase matters.