1 / 7NICRON K11 Rechargeable Keychain Flashlight, 400 Lumens
Lumens: The NICRON K11 is a rechargeable keychain flashlight with a claimed 400-lumen output, four light types and eight modes. Its compact 16 g format is suited to carrying on keys or a bag, while its listed 11-hour runtime applies only in low mode.
At a glance
- Four light types include white, warm, UV and red, with eight listed modes.
- Rechargeable 300 mAh battery. The claimed 11-hour runtime is specifically for low mode.
- Compact body is listed as 16 g and 6.1 x 1.5 cm, with keychain carrying as an intended use.
- The listing claims IPX4 water resistance and resistance to a 1-metre shock.
Pros and cons
Pros
- Small, light format is designed for keychain or bag carry.
- Multiple light types and modes provide options beyond a single white beam.
- Rechargeable battery avoids replacing disposable cells.
Cons
- The 11-hour runtime claim applies to low mode, not all brightness or light settings.
- At 300 mAh, battery capacity is modest for buyers expecting extended use at brighter settings.
Technical specifications
14 specifications| Claimed maximum output | 400 Lumens |
|---|---|
| Light source | LED |
| Light types | white light/warm light/UV light and red light |
| Lighting modes | low/medium/high/max/warm/UV/red/flash |
| Power configuration | Battery Powered |
|---|---|
| Battery capacity | 300 mAh capacity |
| Low-mode runtime claim | 11 hours in low mode |
| Weight | 16 g |
|---|---|
| Dimensions | 6.1 x 1.5 cm |
| Material listed | Plastic |
| Colour | White |
| Special feature | Keychain |
| Water resistance | IPX4 water resistance |
|---|---|
| Shock resistance claim | 1 meter shock resistance |
What to know before buying
- Output and durability figures are listing claims, not independently verified measurements. Runtime is specified for low mode only. Do not treat the IPX4 claim as protection against immersion.
Who is it for?
A good fit for
- People wanting a compact rechargeable light for keys, a bag or everyday carry.
- Campers or households seeking a small supplementary light for brief tasks or outages.
- Buyers who would use the listed warm, UV or red modes as well as white light.
Less suited to
- Anyone needing a primary high-output torch for sustained outdoor illumination.
- Buyers who require a confirmed runtime at medium, high or maximum output.

Customer reviews on Amazon
- 5 stars
67% 67% - 4 stars
14% 14% - 3 stars
6% 6% - 2 stars
4% 4% - 1 star
9% 9%
Aggregate customer ratings are mostly in the five-star category, but a smaller share is distributed across lower ratings, including one-star ratings. This suggests generally favourable reception alongside some less positive experiences, without revealing their reasons. The figures do not establish how well the claimed output, runtime or durability performs in practice, so buyers should weigh the low-mode-only runtime detail against their intended use.
Frequently asked questions
How long does the NICRON K11 run on a charge?
The listing claims up to 11 hours in low mode. It does not state runtime for the other modes.
Which light types and modes are listed?
The four light types are white, warm, UV and red. Eight modes are listed: low, medium, high, max, warm, UV, red and flash.
Can the K11 be used in wet weather?
The listing claims IPX4 water resistance, which indicates splash resistance rather than suitability for immersion.
How small and light is it?
The listed weight is 16 g and dimensions are 6.1 x 1.5 cm.
