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Wuben I331 520lm In-depth review, Pros and Cons

Cree XP-L V5 LED
520 lm output
2500 cd intensity
1 x 14500 Li-Ion battery

The Wuben I331 (I331) released in 2017. It uses Cree XP-L V5 LED, SMO reflector and 1 x 14500 Li-Ion battery. The powerful emitter in this flashlight provides up to 520 lm output, 2500 cd intensity, and a beam distance of 100 m.

The I331 is a powerful and reliable flashlight. It has impressive illumination and durable construction. It is an exceptional lighting tool, it works in many situations and environments. This light has 5 modes of lighting. The lack of mode memory means you need to adjust the flashlight's settings each time you turn it on. The strobe function produces a high-frequency flashing light pattern. It disorients or distracts potential threats or aggressors. This Wuben USB rechargeable flashlight comes with versatile charging options.

Wuben I331 (I331) pictures

Wuben I331 / I331 photo 1.
Wuben I331 / I331 photo 2.
Wuben I331 / I331 photo 3.
Wuben I331 / I331

We base the specifications below on the official data published by the manufacturer, while also considering user reviews. If you found an error or something lacking in the specifications for the Wuben I331, then tell us.

Wuben I331 (I331) specifications

BrandWuben
NameI331
TypeI331
Rating
Rated 4 / 5 based on 1358 user votes.
Launch2017
Formflashlight

The I331 flashlight allows you to light dark areas. It helps you find hazards or stop threats by shining light on them.

Body

Weight85.8 g
Length125 mm
Body diameter21.5 mm
Head diameter26 mm
Materialaluminium alloy with HAIII hard-anodized finish
Colorsblack

The I331 is small, compact, and designed for ultra-portability. The length of a flashlight can affect how it feels in your hand and how you can grip and maneuver it. The aluminium body of the I331 has excellent thermal conductivity. This means it can effectively dissipate heat generated by the flashlight's components. The body of I331 flashlight treated with a Type III hard-anodized, anti-abrasive finish. The I331 flashlight comes in a stylish black color.

System

EmitterCree XP-L V5 LED
Color temperature6500 K
ReflectorSMO
LensAR coated glass
Switchmechanical rear

Lighting professionals trust Cree LEDs. Cree LEDs have gained a strong reputation for quality and performance. The color temperature choice depends on the light's use and personal taste. The smooth reflector creates a well-defined hotspot at the center. This hotspot provides a concentrated beam for long-range use. The AR coating reduces the loss of light due to reflections, allowing more light to pass through the lens.

Mechanical switches are usually robust. They resist wear and tear and work in many environments. The rear switch of the I331 is usually operated with the thumb or finger. This makes it easy to reach and use.

Performance

Flux520 lm
Intensity2500 cd
Throw100 m
CD/LM factor4.81

520 lm can provide a decent amount of brightness and be suitable for many everyday tasks. The I331 flashlight has 2500 cd. It provides a much brighter and more intense beam. The throw is the distance in meters at which the flashlight produces a light intensity of 0.25 lux. The candela per lumen (cd/lm) ratio can be used to determine if a flashlight has a spot or flood type beam.

Software

Modes5 modes
Mode memoryno
Ramping modeno
Strobeyes
SOS/Beaconyes

A flashlight's modes are different output settings or brightness levels. They can be chosen to meet different needs and preferences. You can use Strobe for signaling purposes. It can also be used for self-defense or to attract attention in emergency situations. The I331's SOS mode produces a specific sequence of long and short flashes. It signals distress or emergency.

Features

Battery1 x 14500 Li-Ion battery
Battery indicatoryes
Charger portmicroUSB
LVPyes
Thermal regulationno
ProtectionIPx8
AUX LEDsno
Magneticno

The I331 flashlight utilizes 1 x 14500 Li-Ion battery as its power source. The battery indicator helps users check the battery status. It also estimates how much runtime they have left before recharging the battery. The built-in charger allows for convenient and versatile charging. You can use various USB power sources to recharge the battery. The flashlight detects when the battery's voltage has dropped to a certain level. Then, it reduces or cuts off the power.

Flashlights without thermal protection may rely on other design elements to dissipate heat. These elements include heat sinks, fins, or body materials with good thermal conductivity. The "8" in the IPx8 rating means the highest level of protection. It is against water ingress.

Accessories

Package contents14500 battery
2 x spare o-rings
clip
lanyard
microUSB cable

The included battery lets you immediately use the flashlight for your desired applications. It saves time and allows you to focus on your tasks or activities. The clip provides flexibility in how you carry your flashlight. Securing the flashlight with a lanyard frees up your hands for other tasks. It keeps the flashlight within reach. Instead of searching for matching O-rings, having spare O-rings allows quick fixes.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the Wuben I331 flashlight 30 seconds after switching on the light. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

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