The X4 sits in the crowded flat/boxy EDC flashlight class alongside the Olight Arkfeld line, Nitecore's EDC series, and Wuben's own X-series stablemates (X0, X1, X2, X3). Its pitch inside that class is the removable 18650 — most flat rivals seal their cells — plus a rotary dimmer and an unusually capable RGB/warm side light.
By [AUTHOR NAME]·Owned, in use·4.3 across 3,754 ratings (verified live 2026-08-31; normal buy box — Add to Cart/Buy Now, Ships from Amazon, Sold by Sinofire US, single unit, In Stock; this ASIN is the White colorway) on Amazon
Published: [DATE]Listing re-checked: Aug 31, 2026My measurements: pending
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The verdict
Direct answer: The Wuben X4 is a flat-body, USB-C rechargeable 18650 EDC flashlight that 1Lumen's bench test measured at 1,460 lumens at turn-on and 178 meters of throw against its 1,500-lumen/205 m claim (a 4.5-star verdict), backed by a 4.3/5 Amazon rating across 3,754 ratings — its real weaknesses being low-CRI emitters (about 64 CRI on the main LEDs per a BudgetLightForum meter test) and a fast step-down to roughly 470 sustained lumens.
Owned & in use
WUBEN X4 EDC Flashlight
For: EDC users who want one flat pocket light covering throw, flood, and camp/RGB lighting with a swappable 18650 and USB-C — and who care more about versatility than beam tint.
Skip if: You're a tint/CRI snob or need sustained high output — the X4 measures around 64 CRI and steps down from turbo within seconds.
Owner photos & measurements coming
I own this one — my photos and hands-on measurements land in the next update to this page. Until then, every claim below is sourced and linked; nothing is invented.
Key specs
Spec
Value
Max output (claimed)
1,500 lumens turbo; 1–100 lumen warm/RGB side light
Beam distance
205 m claimed; 1Lumen measured 178 m at 30 seconds
Battery
Removable 18650 behind a hinged door (3,400 mAh button-top included; accepts flat- or button-top)
Charging
Onboard USB-C (1Lumen measured ~3 h at an 11.65 W peak charge rate)
Emitters
Four white main LEDs behind mixed spot/flood optics, plus an RGB + 4000K warm-white COB side light (7 colors)
Controls
Slide mode switch (lock/side/main/moonlight), stepless rotary dimmer, and a tactical tail switch
Size and weight
95.7 × 37.3 × 26.3 mm (3.77 × 1.47 × 1.04 in), 137 g with battery
Durability
Aluminum body, IP65 dust/water resistance per Wuben; magnetic tail cap and pocket clip
What independent testing and the community found
1Lumen bench review — Measured 1,460 lm at turn-on and 1,053 lm at 30 s (vs 1,500 lm claimed), 7,950 cd / 178 m throw (vs 205 m claimed), and a 3 h 30 min ANSI turbo runtime that beat the 3-hour spec; noted output begins ramping down immediately and settles near 469 lm after a minute. Scored it 4.5 stars and called it a winner.
ZeroAir Reviews — Measured 839 lm at 30 seconds and 8,045 cd; criticized the low CRI, the lack of discrete modes between moonlight and turbo, and the angular body — but praised the hinged 18650 cover and called it a good take on a standard 18650 light.
BudgetLightForum (worrub918's review) — Opple meter readings of 64 CRI on the main LEDs and 77 CRI on the side COB with a greenish low-mode tint; found the 1,500-lumen claim credible, survived an intentional 1-meter drop, and flagged the slightly protruding tail switch that wobbles when tail-standing.
The Gadgeteer — Found the four-LED main beam a useful all-purpose mix of spot and flood, and the flat design sits well in the pocket with a stout, mostly deep-carry clip.
Wuben official X4 product page — Manufacturer spec source: 1,500 lumens, 205 m beam, IP65 rating, user-replaceable battery, USB-C fast charging, magnetic base — and confirms the battery is user-replaceable, contradicting the Amazon listing's sealed-battery bullet.
Pros and cons
What works
Bench-verified output is genuinely strong for a pocket light: 1Lumen measured 1,460 lumens at turn-on and about 178 meters of throw from a single 18650.
The battery is a standard removable 18650 behind a hinged door — a design detail both ZeroAir and BudgetLightForum singled out for praise — so you can swap cells instead of retiring the light.
The stepless rotary dimmer plus slide-switch layout gives fine brightness control, and the RGB/4000K side light covers tent, camp, and map-reading duty without a second light.
Turbo runtime beat its own spec in 1Lumen's ANSI test (3 h 30 min measured vs 3 h claimed), with onboard USB-C charging and a magnetic tail for hands-free use.
What doesn't
Low color rendering: about 64 CRI on the main LEDs with a greenish tint at low levels, per a BudgetLightForum Opple meter test — tint-sensitive users will notice.
Turbo doesn't hold: 1Lumen saw output ramping down the moment it turns on, settling near 469 lumens after a minute, and ZeroAir measured only 839 lumens at the 30-second mark.
The four-switch control scheme has a learning curve, and the Amazon listing's own copy wrongly describes the battery as sealed and non-removable — it isn't.
The angular body is less comfortable in hand than a round tube (ZeroAir), and the slightly protruding tail switch makes tail-standing wobbly (BudgetLightForum).
Yes. Despite Amazon listing copy claiming a sealed, non-removable battery, the X4 uses a standard 18650 behind a hinged door — a 3,400 mAh button-top cell ships inside, and it accepts flat- or button-top 18650s. 1Lumen, ZeroAir, BudgetLightForum, and Wuben's own site all confirm this.
Does the Wuben X4 really put out 1,500 lumens?
Only at the instant it turns on. 1Lumen measured 1,460 lumens at turn-on, dropping to 1,053 by 30 seconds and roughly 469 sustained after a minute; ZeroAir's 30-second reading was 839 lumens. Treat it as a ~470-lumen sustained light with a brief turbo punch.
How long does the X4 take to charge?
1Lumen measured about 3 hours 7 minutes over USB-C at an 11.65 W peak — noticeably longer than the 1.5-hour claim in the Amazon listing. You can run moonlight mode while it charges.